23072920646 has 16 divisors (see below), whose sum is σ = 34859874960. Its totient is φ = 11453089440.

The previous prime is 23072920643. The next prime is 23072920657. The reversal of 23072920646 is 64602927032.

It is a happy number.

It is a super-2 number, since 2×23072920646² (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 (23072920643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339725 + ... + 401943.

It is an arithmetic number, because the mean of its divisors is an integer number (2178742185).

Almost surely, 2^23072920646 is an apocalyptic number.

23072920646 is a deficient number, since it is larger than the sum of its proper divisors (11786954314).

23072920646 is a wasteful number, since it uses less digits than its factorization.

23072920646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63559.

The product of its (nonzero) digits is 217728, while the sum is 41.

The spelling of 23072920646 in words is "twenty-three billion, seventy-two million, nine hundred twenty thousand, six hundred forty-six".