40636316520 has 384 divisors, whose sum is σ = 149712675840. Its totient is φ = 9868677120.

The previous prime is 40636316477. The next prime is 40636316527. The reversal of 40636316520 is 2561363604.

40636316520 is a `hidden beast` number, since 4 + 0 + 63 + 63 + 16 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40636316527) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5118474 + ... + 5126406.

It is an arithmetic number, because the mean of its divisors is an integer number (389876760).

Almost surely, 2^40636316520 is an apocalyptic number.

40636316520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40636316520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74856337920).

40636316520 is an abundant number, since it is smaller than the sum of its proper divisors (109076359320).

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

40636316520 is a wasteful number, since it uses less digits than its factorization.

40636316520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8007 (or 7991 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 40636316520 in words is "forty billion, six hundred thirty-six million, three hundred sixteen thousand, five hundred twenty".