36405378683531 has 48 divisors (see below), whose sum is σ = 44610357281280. Its totient is φ = 29476414598400.

The previous prime is 36405378683503. The next prime is 36405378683539. The reversal of 36405378683531 is 13538687350463.

It is a de Polignac number, because none of the positive numbers 2^k-36405378683531 is a prime.

It is a super-2 number, since 2×36405378683531² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36405378683539) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 66831341 + ... + 67373873.

It is an arithmetic number, because the mean of its divisors is an integer number (929382443360).

Almost surely, 2^{36405378683531} is an apocalyptic number.

36405378683531 is a deficient number, since it is larger than the sum of its proper divisors (8204978597749).

36405378683531 is a wasteful number, since it uses less digits than its factorization.

36405378683531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544068 (or 544057 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 62.

The spelling of 36405378683531 in words is "thirty-six trillion, four hundred five billion, three hundred seventy-eight million, six hundred eighty-three thousand, five hundred thirty-one".