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7620745451 = 11263212
BaseRepresentation
bin1110001100011101…
…10101100011101011
3201200002202222110112
413012032311203223
5111101402323301
63300111004535
7356564160524
oct70616654353
921602688415
107620745451
113260791940
12158820974b
13945ab6347
1452418384b
152e90839bb
hex1c63b58eb

7620745451 has 6 divisors (see below), whose sum is σ = 8313856356. Its totient is φ = 6927687200.

The previous prime is 7620745427. The next prime is 7620745459. The reversal of 7620745451 is 1545470267.

It is a de Polignac number, because none of the positive numbers 2k-7620745451 is a prime.

It is a super-2 number, since 2×76207454512 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7620745399 and 7620745408.

It is not an unprimeable number, because it can be changed into a prime (7620745459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 276371 + ... + 302691.

It is an arithmetic number, because the mean of its divisors is an integer number (1385642726).

Almost surely, 27620745451 is an apocalyptic number.

7620745451 is a deficient number, since it is larger than the sum of its proper divisors (693110905).

7620745451 is an frugal number, since it uses more digits than its factorization.

7620745451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52653 (or 26332 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The square root of 7620745451 is about 87296.8811069445. The cubic root of 7620745451 is about 1967.8824464996.

The spelling of 7620745451 in words is "seven billion, six hundred twenty million, seven hundred forty-five thousand, four hundred fifty-one".

Divisors: 1 11 26321 289531 692795041 7620745451