16978701387 has 16 divisors (see below), whose sum is σ = 23016026880. Its totient is φ = 11130362400.

The previous prime is 16978701367. The next prime is 16978701391. The reversal of 16978701387 is 78310787961.

It is not a de Polignac number, because 16978701387 - 2⁶ = 16978701323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16978701367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 737314 + ... + 759992.

It is an arithmetic number, because the mean of its divisors is an integer number (1438501680).

Almost surely, 2^16978701387 is an apocalyptic number.

16978701387 is a deficient number, since it is larger than the sum of its proper divisors (6037325493).

16978701387 is a wasteful number, since it uses less digits than its factorization.

16978701387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26834.

The product of its (nonzero) digits is 3556224, while the sum is 57.

The spelling of 16978701387 in words is "sixteen billion, nine hundred seventy-eight million, seven hundred one thousand, three hundred eighty-seven".