23661600240 has 80 divisors (see below), whose sum is σ = 73393293600. Its totient is φ = 6306118656.

The previous prime is 23661600217. The next prime is 23661600289. The reversal of 23661600240 is 4200616632.

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

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 23661600198 and 23661600207.

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, 401806 + ... + 456914.

It is an arithmetic number, because the mean of its divisors is an integer number (917416170).

Almost surely, 2^23661600240 is an apocalyptic number.

23661600240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23661600240 is an abundant number, since it is smaller than the sum of its proper divisors (49731693360).

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

23661600240 is a wasteful number, since it uses less digits than its factorization.

23661600240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56914 (or 56908 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The spelling of 23661600240 in words is "twenty-three billion, six hundred sixty-one million, six hundred thousand, two hundred forty".