1375220763720 has 160 divisors (see below), whose sum is σ = 4771375614720. Its totient is φ = 354895655040.

The previous prime is 1375220763649. The next prime is 1375220763757. The reversal of 1375220763720 is 273670225731.

It is a happy number.

1375220763720 is a `hidden beast` number, since 1 + 3 + 7 + 5 + 2 + 2 + 0 + 7 + 637 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6745542 + ... + 6946421.

It is an arithmetic number, because the mean of its divisors is an integer number (29821097592).

Almost surely, 2^{1375220763720} is an apocalyptic number.

1375220763720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1375220763720 is an abundant number, since it is smaller than the sum of its proper divisors (3396154851000).

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

1375220763720 is a wasteful number, since it uses less digits than its factorization.

1375220763720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13692017 (or 13692004 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 45.

The spelling of 1375220763720 in words is "one trillion, three hundred seventy-five billion, two hundred twenty million, seven hundred sixty-three thousand, seven hundred twenty".