1381163125420 has 48 divisors (see below), whose sum is σ = 3123641455200. Its totient is φ = 509953568256.

The previous prime is 1381163125361. The next prime is 1381163125453. The reversal of 1381163125420 is 245213611831.

It is a super-2 number, since 2×1381163125420² (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 1381163125420.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15060024 + ... + 15151456.

It is an arithmetic number, because the mean of its divisors is an integer number (65075863650).

Almost surely, 2^{1381163125420} is an apocalyptic number.

1381163125420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1381163125420 is an abundant number, since it is smaller than the sum of its proper divisors (1742478329780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1381163125420 is a wasteful number, since it uses less digits than its factorization.

1381163125420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149554 (or 149552 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 1381163125420 in words is "one trillion, three hundred eighty-one billion, one hundred sixty-three million, one hundred twenty-five thousand, four hundred twenty".