23651602540 has 12 divisors (see below), whose sum is σ = 49668365376. Its totient is φ = 9460641008.

The previous prime is 23651602519. The next prime is 23651602543. The reversal of 23651602540 is 4520615632.

It is a junction number, because it is equal to n+sod(n) for n = 23651602496 and 23651602505.

It is not an unprimeable number, because it can be changed into a prime (23651602543) 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 3 ways as a sum of consecutive naturals, for example, 591290044 + ... + 591290083.

It is an arithmetic number, because the mean of its divisors is an integer number (4139030448).

Almost surely, 2^23651602540 is an apocalyptic number.

23651602540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23651602540 is an abundant number, since it is smaller than the sum of its proper divisors (26016762836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23651602540 is a wasteful number, since it uses less digits than its factorization.

23651602540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182580136 (or 1182580134 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 23651602540 in words is "twenty-three billion, six hundred fifty-one million, six hundred two thousand, five hundred forty".