88978117578 has 16 divisors (see below), whose sum is σ = 203378554560. Its totient is φ = 25422319296.

The previous prime is 88978117559. The next prime is 88978117583. The reversal of 88978117578 is 87571187988.

It is a Curzon 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, 1059263263 + ... + 1059263346.

It is an arithmetic number, because the mean of its divisors is an integer number (12711159660).

Almost surely, 2^88978117578 is an apocalyptic number.

88978117578 is an abundant number, since it is smaller than the sum of its proper divisors (114400436982).

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

88978117578 is a wasteful number, since it uses less digits than its factorization.

88978117578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2118526621.

The product of its digits is 63221760, while the sum is 69.

The spelling of 88978117578 in words is "eighty-eight billion, nine hundred seventy-eight million, one hundred seventeen thousand, five hundred seventy-eight".