73078881956 has 12 divisors (see below), whose sum is σ = 127911794892. Its totient is φ = 36532654848.

The previous prime is 73078881923. The next prime is 73078881989. The reversal of 73078881956 is 65918887037.

It is an interprime number because it is at equal distance from previous prime (73078881923) and next prime (73078881989).

It can be written as a sum of positive squares in 2 ways, for example, as 67280059456 + 5798822500 = 259384^2 + 76150^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1672265 + ... + 1715408.

It is an arithmetic number, because the mean of its divisors is an integer number (10659316241).

Almost surely, 2^73078881956 is an apocalyptic number.

It is an amenable number.

73078881956 is a deficient number, since it is larger than the sum of its proper divisors (54832912936).

73078881956 is a wasteful number, since it uses less digits than its factorization.

73078881956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393070 (or 3393068 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 73078881956 in words is "seventy-three billion, seventy-eight million, eight hundred eighty-one thousand, nine hundred fifty-six".