30523072157 has 4 divisors (see below), whose sum is σ = 30547868736. Its totient is φ = 30498275580.

The previous prime is 30523072103. The next prime is 30523072193. The reversal of 30523072157 is 75127032503.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30523072157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30523072057) 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, 12396443 + ... + 12398904.

It is an arithmetic number, because the mean of its divisors is an integer number (7636967184).

Almost surely, 2^30523072157 is an apocalyptic number.

It is an amenable number.

30523072157 is a deficient number, since it is larger than the sum of its proper divisors (24796579).

30523072157 is a wasteful number, since it uses less digits than its factorization.

30523072157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24796578.

The product of its (nonzero) digits is 44100, while the sum is 35.

The spelling of 30523072157 in words is "thirty billion, five hundred twenty-three million, seventy-two thousand, one hundred fifty-seven".