7356257661 has 16 divisors (see below), whose sum is σ = 9833693760. Its totient is φ = 4891514880.

The previous prime is 7356257659. The next prime is 7356257677. The reversal of 7356257661 is 1667526537.

It is not a de Polignac number, because 7356257661 - 2¹ = 7356257659 is a prime.

It is a super-2 number, since 2×7356257661² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7356257661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7356257611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3716170 + ... + 3718148.

It is an arithmetic number, because the mean of its divisors is an integer number (614605860).

Almost surely, 2^7356257661 is an apocalyptic number.

It is an amenable number.

7356257661 is a deficient number, since it is larger than the sum of its proper divisors (2477436099).

7356257661 is a wasteful number, since it uses less digits than its factorization.

7356257661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4556.

The product of its digits is 1587600, while the sum is 48.

The square root of 7356257661 is about 85768.6286529055. The cubic root of 7356257661 is about 1944.8479084004.

The spelling of 7356257661 in words is "seven billion, three hundred fifty-six million, two hundred fifty-seven thousand, six hundred sixty-one".