1397880863895 has 16 divisors (see below), whose sum is σ = 2333853268992. Its totient is φ = 713121831840.

The previous prime is 1397880863891. The next prime is 1397880863917. The reversal of 1397880863895 is 5983680887931.

It is not a de Polignac number, because 1397880863895 - 2² = 1397880863891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397880863891) 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, 2025913951 + ... + 2025914640.

It is an arithmetic number, because the mean of its divisors is an integer number (145865829312).

Almost surely, 2^{1397880863895} is an apocalyptic number.

1397880863895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1397880863895 is a deficient number, since it is larger than the sum of its proper divisors (935972405097).

1397880863895 is a wasteful number, since it uses less digits than its factorization.

1397880863895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051828622.

The product of its (nonzero) digits is 627056640, while the sum is 75.

The spelling of 1397880863895 in words is "one trillion, three hundred ninety-seven billion, eight hundred eighty million, eight hundred sixty-three thousand, eight hundred ninety-five".