75399699357 has 24 divisors (see below), whose sum is σ = 112683113400. Its totient is φ = 48525861888.

The previous prime is 75399699283. The next prime is 75399699367.

75399699357 is a `hidden beast` number, since 75 + 39 + 96 + 99 + 357 = 666.

75399699357 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 12405727161 + 62993972196 = 111381^2 + 250986^2 .

It is not a de Polignac number, because 75399699357 - 2¹⁶ = 75399633821 is a prime.

It is a super-2 number, since 2×75399699357² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75399699367) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2131269 + ... + 2166357.

It is an arithmetic number, because the mean of its divisors is an integer number (4695129725).

Almost surely, 2^75399699357 is an apocalyptic number.

It is an amenable number.

75399699357 is a deficient number, since it is larger than the sum of its proper divisors (37283414043).

75399699357 is a wasteful number, since it uses less digits than its factorization.

75399699357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43357 (or 43354 counting only the distinct ones).

The product of its digits is 434010150, while the sum is 72.

The spelling of 75399699357 in words is "seventy-five billion, three hundred ninety-nine million, six hundred ninety-nine thousand, three hundred fifty-seven".