21250477403232 has 864 divisors, whose sum is σ = 72927242390016. Its totient is φ = 5303232000000.

The previous prime is 21250477403203. The next prime is 21250477403273. The reversal of 21250477403232 is 23230477405212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11799264732 + ... + 11799266532.

It is an arithmetic number, because the mean of its divisors is an integer number (84406530544).

Almost surely, 2^{21250477403232} is an apocalyptic number.

21250477403232 is a gapful number since it is divisible by the number (22) 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 21250477403232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36463621195008).

21250477403232 is an abundant number, since it is smaller than the sum of its proper divisors (51676764986784).

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

21250477403232 is a wasteful number, since it uses less digits than its factorization.

21250477403232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 42.

The spelling of 21250477403232 in words is "twenty-one trillion, two hundred fifty billion, four hundred seventy-seven million, four hundred three thousand, two hundred thirty-two".