1138373717520 has 80 divisors (see below), whose sum is σ = 3800416882752. Its totient is φ = 280215068160.

The previous prime is 1138373717491. The next prime is 1138373717521. The reversal of 1138373717520 is 257173738311.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 1138373717520.

It is not an unprimeable number, because it can be changed into a prime (1138373717521) 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, 182428566 + ... + 182434805.

Almost surely, 2^{1138373717520} is an apocalyptic number.

1138373717520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138373717520 is an abundant number, since it is smaller than the sum of its proper divisors (2662043165232).

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

1138373717520 is a wasteful number, since it uses less digits than its factorization.

1138373717520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364863400 (or 364863394 counting only the distinct ones).

The product of its (nonzero) digits is 740880, while the sum is 48.

The spelling of 1138373717520 in words is "one trillion, one hundred thirty-eight billion, three hundred seventy-three million, seven hundred seventeen thousand, five hundred twenty".