7620745453 has 4 divisors (see below), whose sum is σ = 7728079968. Its totient is φ = 7513410940.

The previous prime is 7620745427. The next prime is 7620745459. The reversal of 7620745453 is 3545470267.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3545470267 = 197 ⋅17997311.

It is a cyclic number.

It is not a de Polignac number, because 7620745453 - 2²⁵ = 7587191021 is a prime.

It is a super-2 number, since 2×7620745453² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 53667151 + ... + 53667292.

It is an arithmetic number, because the mean of its divisors is an integer number (1932019992).

Almost surely, 2^7620745453 is an apocalyptic number.

It is an amenable number.

7620745453 is a deficient number, since it is larger than the sum of its proper divisors (107334515).

7620745453 is a wasteful number, since it uses less digits than its factorization.

7620745453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107334514.

The product of its (nonzero) digits is 705600, while the sum is 43.

The square root of 7620745453 is about 87296.8811183996. The cubic root of 7620745453 is about 1967.8824466718.

The spelling of 7620745453 in words is "seven billion, six hundred twenty million, seven hundred forty-five thousand, four hundred fifty-three".