16656133770 has 24 divisors (see below), whose sum is σ = 43305948036. Its totient is φ = 4441635648.

The previous prime is 16656133759. The next prime is 16656133783. The reversal of 16656133770 is 7733165661.

16656133770 is a `hidden beast` number, since 16 + 6 + 561 + 3 + 3 + 7 + 70 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16488871281 + 167262489 = 128409^2 + 12933^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92533987 + ... + 92534166.

Almost surely, 2^16656133770 is an apocalyptic number.

16656133770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16656133770 is an abundant number, since it is smaller than the sum of its proper divisors (26649814266).

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

16656133770 is a wasteful number, since it uses less digits than its factorization.

16656133770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185068166 (or 185068163 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 45.

It can be divided in two parts, 16656 and 133770, that added together give a triangular number (150426 = T₅₄₈).

The spelling of 16656133770 in words is "sixteen billion, six hundred fifty-six million, one hundred thirty-three thousand, seven hundred seventy".