72078701378 has 16 divisors (see below), whose sum is σ = 113992967520. Its totient is φ = 34087195296.

The previous prime is 72078701347. The next prime is 72078701381. The reversal of 72078701378 is 87310787027.

It is a happy 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, 1513676 + ... + 1560567.

It is an arithmetic number, because the mean of its divisors is an integer number (7124560470).

Almost surely, 2^72078701378 is an apocalyptic number.

72078701378 is a deficient number, since it is larger than the sum of its proper divisors (41914266142).

72078701378 is a wasteful number, since it uses less digits than its factorization.

72078701378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074881.

The product of its (nonzero) digits is 921984, while the sum is 50.

The spelling of 72078701378 in words is "seventy-two billion, seventy-eight million, seven hundred one thousand, three hundred seventy-eight".