23557321534 has 32 divisors (see below), whose sum is σ = 35989272000. Its totient is φ = 11563140864.

The previous prime is 23557321517. The next prime is 23557321537. The reversal of 23557321534 is 43512375532.

It is a happy number.

It is a super-2 number, since 2×23557321534² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23557321537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17859327 + ... + 17860645.

It is an arithmetic number, because the mean of its divisors is an integer number (1124664750).

Almost surely, 2^23557321534 is an apocalyptic number.

23557321534 is a deficient number, since it is larger than the sum of its proper divisors (12431950466).

23557321534 is a wasteful number, since it uses less digits than its factorization.

23557321534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2052.

The product of its digits is 378000, while the sum is 40.

The spelling of 23557321534 in words is "twenty-three billion, five hundred fifty-seven million, three hundred twenty-one thousand, five hundred thirty-four".