18425618901456 has 160 divisors (see below), whose sum is σ = 51818728389120. Its totient is φ = 5607899899392.

The previous prime is 18425618901449. The next prime is 18425618901497. The reversal of 18425618901456 is 65410981652481.

It is a super-2 number, since 2×18425618901456² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18425618901456.

It is a congruent number.

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, 43790731 + ... + 44209493.

It is an arithmetic number, because the mean of its divisors is an integer number (323867052432).

Almost surely, 2^{18425618901456} is an apocalyptic number.

18425618901456 is a gapful number since it is divisible by the number (16) 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 18425618901456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25909364194560).

18425618901456 is an abundant number, since it is smaller than the sum of its proper divisors (33393109487664).

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

18425618901456 is a wasteful number, since it uses less digits than its factorization.

18425618901456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419553 (or 419547 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 60.

The spelling of 18425618901456 in words is "eighteen trillion, four hundred twenty-five billion, six hundred eighteen million, nine hundred one thousand, four hundred fifty-six".