87790251768 has 16 divisors (see below), whose sum is σ = 219475629480. Its totient is φ = 29263417248.

The previous prime is 87790251739. The next prime is 87790251793. The reversal of 87790251768 is 86715209778.

It is a congruent number.

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, 1828963555 + ... + 1828963602.

Almost surely, 2^87790251768 is an apocalyptic number.

It is an amenable number.

87790251768 is an abundant number, since it is smaller than the sum of its proper divisors (131685377712).

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

87790251768 is a wasteful number, since it uses less digits than its factorization.

87790251768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657927166 (or 3657927162 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 60.

The spelling of 87790251768 in words is "eighty-seven billion, seven hundred ninety million, two hundred fifty-one thousand, seven hundred sixty-eight".