18437379071766 has 16 divisors (see below), whose sum is σ = 36874880999424. Its totient is φ = 6145772547944.

The previous prime is 18437379071731. The next prime is 18437379071777. The reversal of 18437379071766 is 66717097373481.

It is a self number, because there is not a number n which added to its sum of digits gives 18437379071766.

It is a congruent 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, 3107226 + ... + 6821261.

It is an arithmetic number, because the mean of its divisors is an integer number (2304680062464).

Almost surely, 2^{18437379071766} is an apocalyptic number.

18437379071766 is an abundant number, since it is smaller than the sum of its proper divisors (18437501927658).

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

18437379071766 is a wasteful number, since it uses less digits than its factorization.

18437379071766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10237995.

The product of its (nonzero) digits is 224042112, while the sum is 69.

The spelling of 18437379071766 in words is "eighteen trillion, four hundred thirty-seven billion, three hundred seventy-nine million, seventy-one thousand, seven hundred sixty-six".