23515065212 has 24 divisors (see below), whose sum is σ = 41563057536. Its totient is φ = 11639973168.

The previous prime is 23515065199. The next prime is 23515065271. The reversal of 23515065212 is 21256051532.

It is a super-2 number, since 2×23515065212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1966283 + ... + 1978205.

It is an arithmetic number, because the mean of its divisors is an integer number (1731794064).

Almost surely, 2^23515065212 is an apocalyptic number.

It is an amenable number.

23515065212 is a deficient number, since it is larger than the sum of its proper divisors (18047992324).

23515065212 is a wasteful number, since it uses less digits than its factorization.

23515065212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16817 (or 16815 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 23515065212 in words is "twenty-three billion, five hundred fifteen million, sixty-five thousand, two hundred twelve".