40072538652 has 24 divisors (see below), whose sum is σ = 99002743056. Its totient is φ = 12571776768.

The previous prime is 40072538651. The next prime is 40072538683. The reversal of 40072538652 is 25683527004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40072538651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98216803 + ... + 98217210.

It is an arithmetic number, because the mean of its divisors is an integer number (4125114294).

Almost surely, 2^40072538652 is an apocalyptic number.

It is an amenable number.

40072538652 is an abundant number, since it is smaller than the sum of its proper divisors (58930204404).

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

40072538652 is a wasteful number, since it uses less digits than its factorization.

40072538652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196434037 (or 196434035 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The spelling of 40072538652 in words is "forty billion, seventy-two million, five hundred thirty-eight thousand, six hundred fifty-two".