1378931117900 has 72 divisors (see below), whose sum is σ = 3436934188800. Its totient is φ = 470400575040.

The previous prime is 1378931117891. The next prime is 1378931117957. The reversal of 1378931117900 is 97111398731.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4810202 + ... + 5088801.

Almost surely, 2^{1378931117900} is an apocalyptic number.

1378931117900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378931117900 is an abundant number, since it is smaller than the sum of its proper divisors (2058003070900).

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

1378931117900 is a wasteful number, since it uses less digits than its factorization.

1378931117900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9899223 (or 9899216 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 50.

The spelling of 1378931117900 in words is "one trillion, three hundred seventy-eight billion, nine hundred thirty-one million, one hundred seventeen thousand, nine hundred".