1138915777597 has 24 divisors (see below), whose sum is σ = 1374535604160. Its totient is φ = 937388125440.

The previous prime is 1138915777553. The next prime is 1138915777609. The reversal of 1138915777597 is 7957775198311.

It is not a de Polignac number, because 1138915777597 - 2¹¹ = 1138915775549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138915777297) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10377529 + ... + 10486702.

It is an arithmetic number, because the mean of its divisors is an integer number (57272316840).

Almost surely, 2^{1138915777597} is an apocalyptic number.

1138915777597 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1138915777597 is a deficient number, since it is larger than the sum of its proper divisors (235619826563).

1138915777597 is a wasteful number, since it uses less digits than its factorization.

1138915777597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20864293 (or 20864280 counting only the distinct ones).

The product of its digits is 116688600, while the sum is 70.

The spelling of 1138915777597 in words is "one trillion, one hundred thirty-eight billion, nine hundred fifteen million, seven hundred seventy-seven thousand, five hundred ninety-seven".