72946064780 has 48 divisors (see below), whose sum is σ = 153709526880. Its totient is φ = 29078995968.

The previous prime is 72946064777. The next prime is 72946064783. The reversal of 72946064780 is 8746064927.

It is an interprime number because it is at equal distance from previous prime (72946064777) and next prime (72946064783).

It is a super-2 number, since 2×72946064780² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (72946064783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9356564 + ... + 9364356.

It is an arithmetic number, because the mean of its divisors is an integer number (3202281810).

Almost surely, 2^72946064780 is an apocalyptic number.

It is an amenable number.

72946064780 is an abundant number, since it is smaller than the sum of its proper divisors (80763462100).

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

72946064780 is a wasteful number, since it uses less digits than its factorization.

72946064780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9338 (or 9336 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 72946064780 in words is "seventy-two billion, nine hundred forty-six million, sixty-four thousand, seven hundred eighty".