40297871952 has 440 divisors, whose sum is σ = 134234861544. Its totient is φ = 11609505792.

The previous prime is 40297871941. The next prime is 40297872053. The reversal of 40297871952 is 25917879204.

It can be written as a sum of positive squares in 4 ways, for example, as 1746905616 + 38550966336 = 41796^2 + 196344^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 87 ways as a sum of consecutive naturals, for example, 208797168 + ... + 208797360.

Almost surely, 2^40297871952 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 40297871952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67117430772).

40297871952 is an abundant number, since it is smaller than the sum of its proper divisors (93936989592).

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

40297871952 is a wasteful number, since it uses less digits than its factorization.

40297871952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 228 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 40297871952 in words is "forty billion, two hundred ninety-seven million, eight hundred seventy-one thousand, nine hundred fifty-two".