40015252140 has 96 divisors (see below), whose sum is σ = 114750155520. Its totient is φ = 10415558400.

The previous prime is 40015252139. The next prime is 40015252163. The reversal of 40015252140 is 4125251004.

It is a self number, because there is not a number n which added to its sum of digits gives 40015252140.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 437731 + ... + 521189.

It is an arithmetic number, because the mean of its divisors is an integer number (1195314120).

Almost surely, 2^40015252140 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 40015252140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57375077760).

40015252140 is an abundant number, since it is smaller than the sum of its proper divisors (74734903380).

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

40015252140 is a wasteful number, since it uses less digits than its factorization.

40015252140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83663 (or 83661 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The spelling of 40015252140 in words is "forty billion, fifteen million, two hundred fifty-two thousand, one hundred forty".