23412508387840 has 320 divisors, whose sum is σ = 67193360099712. Its totient is φ = 7710459494400.

The previous prime is 23412508387771. The next prime is 23412508387861. The reversal of 23412508387840 is 4878380521432.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (55).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18798895 + ... + 20005585.

Almost surely, 2^{23412508387840} is an apocalyptic number.

23412508387840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23412508387840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33596680049856).

23412508387840 is an abundant number, since it is smaller than the sum of its proper divisors (43780851711872).

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

23412508387840 is a wasteful number, since it uses less digits than its factorization.

23412508387840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206791 (or 1206775 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 55.

The spelling of 23412508387840 in words is "twenty-three trillion, four hundred twelve billion, five hundred eight million, three hundred eighty-seven thousand, eight hundred forty".