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".