73640770456 has 32 divisors (see below), whose sum is σ = 158556686400. Its totient is φ = 31711335840.

The previous prime is 73640770403. The next prime is 73640770471. The reversal of 73640770456 is 65407704637.

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, 22020090 + ... + 22023433.

It is an arithmetic number, because the mean of its divisors is an integer number (4954896450).

Almost surely, 2^73640770456 is an apocalyptic number.

73640770456 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

73640770456 is an abundant number, since it is smaller than the sum of its proper divisors (84915915944).

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

73640770456 is a wasteful number, since it uses less digits than its factorization.

73640770456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44043559 (or 44043555 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 49.

It can be divided in two parts, 7 and 3640770456, that added together give a palindrome (3640770463).

The spelling of 73640770456 in words is "seventy-three billion, six hundred forty million, seven hundred seventy thousand, four hundred fifty-six".