87766666663372 has 24 divisors (see below), whose sum is σ = 154718073212976. Its totient is φ = 43562476658688.

The previous prime is 87766666663279. The next prime is 87766666663373. The reversal of 87766666663372 is 27336666666778.

It is a junction number, because it is equal to n+sod(n) for n = 87766666663292 and 87766666663301.

It is not an unprimeable number, because it can be changed into a prime (87766666663373) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121360453 + ... + 122081500.

It is an arithmetic number, because the mean of its divisors is an integer number (6446586383874).

Almost surely, 2^{87766666663372} is an apocalyptic number.

It is an amenable number.

87766666663372 is a deficient number, since it is larger than the sum of its proper divisors (66951406549604).

87766666663372 is a wasteful number, since it uses less digits than its factorization.

87766666663372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243442617 (or 243442615 counting only the distinct ones).

The product of its digits is 13826598912, while the sum is 79.

The spelling of 87766666663372 in words is "eighty-seven trillion, seven hundred sixty-six billion, six hundred sixty-six million, six hundred sixty-three thousand, three hundred seventy-two".