72150498128878 has 32 divisors (see below), whose sum is σ = 122726382055200. Its totient is φ = 31536959924736.

The previous prime is 72150498128857. The next prime is 72150498128881. The reversal of 72150498128878 is 87882189405127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23129751 + ... + 26063122.

It is an arithmetic number, because the mean of its divisors is an integer number (3835199439225).

Almost surely, 2^{72150498128878} is an apocalyptic number.

72150498128878 is a deficient number, since it is larger than the sum of its proper divisors (50575883926322).

72150498128878 is a wasteful number, since it uses less digits than its factorization.

72150498128878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49195876.

The product of its (nonzero) digits is 144506880, while the sum is 70.

The spelling of 72150498128878 in words is "seventy-two trillion, one hundred fifty billion, four hundred ninety-eight million, one hundred twenty-eight thousand, eight hundred seventy-eight".