10421851865472 has 128 divisors (see below), whose sum is σ = 30766199983200. Its totient is φ = 3473130424320.

The previous prime is 10421851865437. The next prime is 10421851865497. The reversal of 10421851865472 is 27456815812401.

10421851865472 is a `hidden beast` number, since 1 + 0 + 4 + 2 + 1 + 8 + 518 + 6 + 54 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×10421851865472² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 14372158 + ... + 15079874.

Almost surely, 2^{10421851865472} is an apocalyptic number.

10421851865472 is a gapful number since it is divisible by the number (12) 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 10421851865472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15383099991600).

10421851865472 is an abundant number, since it is smaller than the sum of its proper divisors (20344348117728).

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

10421851865472 is an equidigital number, since it uses as much as digits as its factorization.

10421851865472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712001 (or 711983 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 54.

The spelling of 10421851865472 in words is "ten trillion, four hundred twenty-one billion, eight hundred fifty-one million, eight hundred sixty-five thousand, four hundred seventy-two".