40023777536 has 72 divisors (see below), whose sum is σ = 82147607808. Its totient is φ = 19450368000.

The previous prime is 40023777517. The next prime is 40023777553. The reversal of 40023777536 is 63577732004.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2837381 + ... + 2851451.

Almost surely, 2^40023777536 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 40023777536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41073803904).

40023777536 is an abundant number, since it is smaller than the sum of its proper divisors (42123830272).

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

40023777536 is a wasteful number, since it uses less digits than its factorization.

40023777536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14399 (or 14385 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 44.

The spelling of 40023777536 in words is "forty billion, twenty-three million, seven hundred seventy-seven thousand, five hundred thirty-six".