16990645624470 has 96 divisors (see below), whose sum is σ = 50487341568768. Its totient is φ = 3883510626624.

The previous prime is 16990645624457. The next prime is 16990645624517. The reversal of 16990645624470 is 7442654609961.

It is a happy number.

16990645624470 is a `hidden beast` number, since 1 + 6 + 9 + 9 + 0 + 64 + 562 + 4 + 4 + 7 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 16990645624398 and 16990645624407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43949757 + ... + 44334663.

It is an arithmetic number, because the mean of its divisors is an integer number (525909808008).

Almost surely, 2^{16990645624470} is an apocalyptic number.

16990645624470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16990645624470 is an abundant number, since it is smaller than the sum of its proper divisors (33496695944298).

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

16990645624470 is a wasteful number, since it uses less digits than its factorization.

16990645624470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454994 (or 454991 counting only the distinct ones).

The product of its (nonzero) digits is 78382080, while the sum is 63.

The spelling of 16990645624470 in words is "sixteen trillion, nine hundred ninety billion, six hundred forty-five million, six hundred twenty-four thousand, four hundred seventy".