16977440648 has 32 divisors (see below), whose sum is σ = 36840748800. Its totient is φ = 7183942272.

The previous prime is 16977440647. The next prime is 16977440659. The reversal of 16977440648 is 84604477961.

It is a super-3 number, since 3×16977440648³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a junction number, because it is equal to n+sod(n) for n = 16977440593 and 16977440602.

It is not an unprimeable number, because it can be changed into a prime (16977440647) 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, 1914365 + ... + 1923212.

It is an arithmetic number, because the mean of its divisors is an integer number (1151273400).

Almost surely, 2^16977440648 is an apocalyptic number.

It is an amenable number.

16977440648 is an abundant number, since it is smaller than the sum of its proper divisors (19863308152).

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

16977440648 is a wasteful number, since it uses less digits than its factorization.

16977440648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3837669 (or 3837665 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 56.

The spelling of 16977440648 in words is "sixteen billion, nine hundred seventy-seven million, four hundred forty thousand, six hundred forty-eight".