36611431540 has 24 divisors (see below), whose sum is σ = 81406595592. Its totient is φ = 13783127040.

The previous prime is 36611431517. The next prime is 36611431573. The reversal of 36611431540 is 4513411663.

It can be written as a sum of positive squares in 4 ways, for example, as 15601508836 + 21009922704 = 124906^2 + 144948^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 36611431496 and 36611431505.

It is a congruent number.

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, 53840001 + ... + 53840680.

It is an arithmetic number, because the mean of its divisors is an integer number (3391941483).

Almost surely, 2^36611431540 is an apocalyptic number.

It is an amenable number.

36611431540 is an abundant number, since it is smaller than the sum of its proper divisors (44795164052).

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

36611431540 is a wasteful number, since it uses less digits than its factorization.

36611431540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107680707 (or 107680705 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 36611431540 in words is "thirty-six billion, six hundred eleven million, four hundred thirty-one thousand, five hundred forty".