42621651252 has 48 divisors (see below), whose sum is σ = 117000616320. Its totient is φ = 13371497856.

The previous prime is 42621651251. The next prime is 42621651253. The reversal of 42621651252 is 25215612624.

42621651252 is a `hidden beast` number, since 4 + 2 + 621 + 6 + 5 + 1 + 25 + 2 = 666.

42621651252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42621651251) and next prime (42621651253).

It is a super-2 number, since 2×42621651252² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42621651251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11605368 + ... + 11609039.

It is an arithmetic number, because the mean of its divisors is an integer number (2437512840).

Almost surely, 2^42621651252 is an apocalyptic number.

It is an amenable number.

42621651252 is an abundant number, since it is smaller than the sum of its proper divisors (74378965068).

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

42621651252 is a wasteful number, since it uses less digits than its factorization.

42621651252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23214437 (or 23214429 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The spelling of 42621651252 in words is "forty-two billion, six hundred twenty-one million, six hundred fifty-one thousand, two hundred fifty-two".