73540774636 has 12 divisors (see below), whose sum is σ = 147081549328. Its totient is φ = 31517474832.

The previous prime is 73540774633. The next prime is 73540774661. The reversal of 73540774636 is 63647704537.

73540774636 is an admirable number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (73540774633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1313228091 + ... + 1313228146.

Almost surely, 2^73540774636 is an apocalyptic number.

It is an amenable number.

73540774636 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

73540774636 is a wasteful number, since it uses less digits than its factorization.

73540774636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626456248 (or 2626456246 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 52.

The spelling of 73540774636 in words is "seventy-three billion, five hundred forty million, seven hundred seventy-four thousand, six hundred thirty-six".