37521423565452 has 192 divisors, whose sum is σ = 100922034304000. Its totient is φ = 12045567697920.

The previous prime is 37521423565337. The next prime is 37521423565511. The reversal of 37521423565452 is 25456532412573.

37521423565452 is a `hidden beast` number, since 3 + 7 + 5 + 2 + 1 + 4 + 23 + 565 + 4 + 52 = 666.

It is a super-2 number, since 2×37521423565452² (a number of 28 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 975855924 + ... + 975894372.

Almost surely, 2^{37521423565452} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 37521423565452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50461017152000).

37521423565452 is an abundant number, since it is smaller than the sum of its proper divisors (63400610738548).

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

37521423565452 is a wasteful number, since it uses less digits than its factorization.

37521423565452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40973 (or 40965 counting only the distinct ones).

The product of its digits is 30240000, while the sum is 54.

The spelling of 37521423565452 in words is "thirty-seven trillion, five hundred twenty-one billion, four hundred twenty-three million, five hundred sixty-five thousand, four hundred fifty-two".