36731197440 has 384 divisors, whose sum is σ = 149228352000. Its totient is φ = 8395259904.

The previous prime is 36731197427. The next prime is 36731197453. The reversal of 36731197440 is 4479113763.

It is an interprime number because it is at equal distance from previous prime (36731197427) and next prime (36731197453).

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 1925871 + ... + 1944849.

It is an arithmetic number, because the mean of its divisors is an integer number (388615500).

Almost surely, 2^36731197440 is an apocalyptic number.

36731197440 is a gapful number since it is divisible by the number (30) 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 36731197440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74614176000).

36731197440 is an abundant number, since it is smaller than the sum of its proper divisors (112497154560).

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

36731197440 is a wasteful number, since it uses less digits than its factorization.

36731197440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19022 (or 18996 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 36731197440 in words is "thirty-six billion, seven hundred thirty-one million, one hundred ninety-seven thousand, four hundred forty".