1387378890951 has 16 divisors (see below), whose sum is σ = 1973872400640. Its totient is φ = 864236018880.

The previous prime is 1387378890941. The next prime is 1387378890973. The reversal of 1387378890951 is 1590988737831.

It is not a de Polignac number, because 1387378890951 - 2³¹ = 1385231407303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387378890941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166708035 + ... + 166716356.

It is an arithmetic number, because the mean of its divisors is an integer number (123367025040).

Almost surely, 2^{1387378890951} is an apocalyptic number.

1387378890951 is a deficient number, since it is larger than the sum of its proper divisors (586493509689).

1387378890951 is a wasteful number, since it uses less digits than its factorization.

1387378890951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333424486.

The product of its (nonzero) digits is 91445760, while the sum is 69.

The spelling of 1387378890951 in words is "one trillion, three hundred eighty-seven billion, three hundred seventy-eight million, eight hundred ninety thousand, nine hundred fifty-one".