71987054900278 has 32 divisors (see below), whose sum is σ = 128788727348736. Its totient is φ = 29506359176448.

The previous prime is 71987054900251. The next prime is 71987054900309. The reversal of 71987054900278 is 87200945078917.

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, 12164251 + ... + 17086342.

It is an arithmetic number, because the mean of its divisors is an integer number (4024647729648).

Almost surely, 2^{71987054900278} is an apocalyptic number.

71987054900278 is a deficient number, since it is larger than the sum of its proper divisors (56801672448458).

71987054900278 is a wasteful number, since it uses less digits than its factorization.

71987054900278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29258268.

The product of its (nonzero) digits is 71124480, while the sum is 67.

The spelling of 71987054900278 in words is "seventy-one trillion, nine hundred eighty-seven billion, fifty-four million, nine hundred thousand, two hundred seventy-eight".