40939452972 has 192 divisors, whose sum is σ = 123691276800. Its totient is φ = 11572162560.

The previous prime is 40939452971. The next prime is 40939453039. The reversal of 40939452972 is 27925493904.

40939452972 is a `hidden beast` number, since 40 + 9 + 3 + 9 + 4 + 529 + 72 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (40939452971) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2273179 + ... + 2291117.

It is an arithmetic number, because the mean of its divisors is an integer number (644225400).

Almost surely, 2^40939452972 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 40939452972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61845638400).

40939452972 is an abundant number, since it is smaller than the sum of its proper divisors (82751823828).

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

40939452972 is a wasteful number, since it uses less digits than its factorization.

40939452972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18093 (or 18085 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 54.

The spelling of 40939452972 in words is "forty billion, nine hundred thirty-nine million, four hundred fifty-two thousand, nine hundred seventy-two".