40786705620 has 54 divisors (see below), whose sum is σ = 123727893198. Its totient is φ = 10875732288.

The previous prime is 40786705613. The next prime is 40786705639. The reversal of 40786705620 is 2650768704.

40786705620 is a `hidden beast` number, since 4 + 0 + 7 + 86 + 7 + 0 + 562 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 24821372304 + 15965333316 = 157548^2 + 126354^2 .

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 17 ways as a sum of consecutive naturals, for example, 2702014 + ... + 2717066.

Almost surely, 2^40786705620 is an apocalyptic number.

It is an amenable number.

40786705620 is an abundant number, since it is smaller than the sum of its proper divisors (82941187578).

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

40786705620 is an equidigital number, since it uses as much as digits as its factorization.

40786705620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30121 (or 15063 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

Multiplying 40786705620 by its sum of digits (45), we get a square (1835401752900 = 1354770²).

40786705620 divided by its sum of digits (45) gives a square (906371236 = 30106²).

The spelling of 40786705620 in words is "forty billion, seven hundred eighty-six million, seven hundred five thousand, six hundred twenty".