13977921070 has 16 divisors (see below), whose sum is σ = 25214843808. Its totient is φ = 5579038240.

The previous prime is 13977921053. The next prime is 13977921079. The reversal of 13977921070 is 7012977931.

It is a self number, because there is not a number n which added to its sum of digits gives 13977921070.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13977921079) 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, 1511434 + ... + 1520653.

It is an arithmetic number, because the mean of its divisors is an integer number (1575927738).

Almost surely, 2^13977921070 is an apocalyptic number.

13977921070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13977921070 is a deficient number, since it is larger than the sum of its proper divisors (11236922738).

13977921070 is a wasteful number, since it uses less digits than its factorization.

13977921070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032555.

The product of its (nonzero) digits is 166698, while the sum is 46.

The spelling of 13977921070 in words is "thirteen billion, nine hundred seventy-seven million, nine hundred twenty-one thousand, seventy".