1387357656855 has 16 divisors (see below), whose sum is σ = 2336602369920. Its totient is φ = 700980710688.

The previous prime is 1387357656749. The next prime is 1387357656859. The reversal of 1387357656855 is 5586567537831.

It is not a de Polignac number, because 1387357656855 - 2⁹ = 1387357656343 is a prime.

It is a super-2 number, since 2×1387357656855² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1387357656855.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1387357656859) 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, 2433960517 + ... + 2433961086.

It is an arithmetic number, because the mean of its divisors is an integer number (146037648120).

Almost surely, 2^{1387357656855} is an apocalyptic number.

1387357656855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1387357656855 is a deficient number, since it is larger than the sum of its proper divisors (949244713065).

1387357656855 is a wasteful number, since it uses less digits than its factorization.

1387357656855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867921630.

The product of its digits is 635040000, while the sum is 69.

The spelling of 1387357656855 in words is "one trillion, three hundred eighty-seven billion, three hundred fifty-seven million, six hundred fifty-six thousand, eight hundred fifty-five".