7495057881 has 12 divisors (see below), whose sum is σ = 10835224660. Its totient is φ = 4992537600.

The previous prime is 7495057873. The next prime is 7495057943. The reversal of 7495057881 is 1887505947.

7495057881 is a `hidden beast` number, since 7 + 495 + 0 + 5 + 78 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 846286281 + 6648771600 = 29091^2 + 81540^2 .

It is not a de Polignac number, because 7495057881 - 2³ = 7495057873 is a prime.

It is a super-2 number, since 2×7495057881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7495057981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335896 + ... + 357513.

Almost surely, 2^7495057881 is an apocalyptic number.

It is an amenable number.

7495057881 is a deficient number, since it is larger than the sum of its proper divisors (3340166779).

7495057881 is a wasteful number, since it uses less digits than its factorization.

7495057881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694616 (or 694613 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 54.

The square root of 7495057881 is about 86574.0023390394. The cubic root of 7495057881 is about 1957.0037762948.

The spelling of 7495057881 in words is "seven billion, four hundred ninety-five million, fifty-seven thousand, eight hundred eighty-one".