1381875431655 has 8 divisors (see below), whose sum is σ = 2211000690672. Its totient is φ = 737000230208.

The previous prime is 1381875431653. The next prime is 1381875431723. The reversal of 1381875431655 is 5561345781831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1381875431655 - 2¹ = 1381875431653 is a prime.

It is a super-2 number, since 2×1381875431655² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1381875431595 and 1381875431604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381875431653) 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, 46062514374 + ... + 46062514403.

It is an arithmetic number, because the mean of its divisors is an integer number (276375086334).

Almost surely, 2^{1381875431655} is an apocalyptic number.

1381875431655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1381875431655 is a deficient number, since it is larger than the sum of its proper divisors (829125259017).

1381875431655 is an equidigital number, since it uses as much as digits as its factorization.

1381875431655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92125028785.

The product of its digits is 12096000, while the sum is 57.

The spelling of 1381875431655 in words is "one trillion, three hundred eighty-one billion, eight hundred seventy-five million, four hundred thirty-one thousand, six hundred fifty-five".