36156572640 has 144 divisors (see below), whose sum is σ = 127954230768. Its totient is φ = 9641742336.

The previous prime is 36156572533. The next prime is 36156572657. The reversal of 36156572640 is 4627565163.

36156572640 is a `hidden beast` number, since 3 + 6 + 15 + 6 + 572 + 64 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 23 ways as a sum of consecutive naturals, for example, 426097 + ... + 503856.

It is an arithmetic number, because the mean of its divisors is an integer number (888571047).

Almost surely, 2^36156572640 is an apocalyptic number.

36156572640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36156572640 is an abundant number, since it is smaller than the sum of its proper divisors (91797658128).

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

36156572640 is an equidigital number, since it uses as much as digits as its factorization.

36156572640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929983 (or 929963 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 36156572640 in words is "thirty-six billion, one hundred fifty-six million, five hundred seventy-two thousand, six hundred forty".