1398209377677 has 16 divisors (see below), whose sum is σ = 2130624717312. Its totient is φ = 798969305520.

The previous prime is 1398209377673. The next prime is 1398209377723. The reversal of 1398209377677 is 7767739028931.

It is not a de Polignac number, because 1398209377677 - 2² = 1398209377673 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398209377673) 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, 2629698 + ... + 3116364.

It is an arithmetic number, because the mean of its divisors is an integer number (133164044832).

Almost surely, 2^{1398209377677} is an apocalyptic number.

It is an amenable number.

1398209377677 is a deficient number, since it is larger than the sum of its proper divisors (732415339635).

1398209377677 is a wasteful number, since it uses less digits than its factorization.

1398209377677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623488.

The product of its (nonzero) digits is 168031584, while the sum is 69.

The spelling of 1398209377677 in words is "one trillion, three hundred ninety-eight billion, two hundred nine million, three hundred seventy-seven thousand, six hundred seventy-seven".