23647903855440 has 80 divisors (see below), whose sum is σ = 75673292361216. Its totient is φ = 6102684864000.

The previous prime is 23647903855369. The next prime is 23647903855487. The reversal of 23647903855440 is 4455830974632.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×23647903855440² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1589233411 + ... + 1589248290.

Almost surely, 2^{23647903855440} is an apocalyptic number.

23647903855440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23647903855440 is an abundant number, since it is smaller than the sum of its proper divisors (52025388505776).

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

23647903855440 is a wasteful number, since it uses less digits than its factorization.

23647903855440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3178481748 (or 3178481742 counting only the distinct ones).

The product of its (nonzero) digits is 87091200, while the sum is 60.

The spelling of 23647903855440 in words is "twenty-three trillion, six hundred forty-seven billion, nine hundred three million, eight hundred fifty-five thousand, four hundred forty".