75123032157 has 24 divisors (see below), whose sum is σ = 112406668920. Its totient is φ = 48311493120.

The previous prime is 75123032119. The next prime is 75123032167.

It is a happy number.

75123032157 is a `hidden beast` number, since 7 + 51 + 230 + 321 + 57 = 666.

75123032157 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 6300231876 + 68822800281 = 79374^2 + 262341^2 .

It is not a de Polignac number, because 75123032157 - 2¹⁵ = 75122999389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75123032167) 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 23 ways as a sum of consecutive naturals, for example, 1110898 + ... + 1176579.

It is an arithmetic number, because the mean of its divisors is an integer number (4683611205).

Almost surely, 2^75123032157 is an apocalyptic number.

It is an amenable number.

75123032157 is a deficient number, since it is larger than the sum of its proper divisors (37283636763).

75123032157 is a wasteful number, since it uses less digits than its factorization.

75123032157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2287613 (or 2287610 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 36.

It can be divided in two parts, 751230 and 32157, that added together give a palindrome (783387).

The spelling of 75123032157 in words is "seventy-five billion, one hundred twenty-three million, thirty-two thousand, one hundred fifty-seven".