1139195778125 has 54 divisors (see below), whose sum is σ = 1452268724634. Its totient is φ = 893552400000.

The previous prime is 1139195778109. The next prime is 1139195778169. The reversal of 1139195778125 is 5218775919311.

It is a happy number.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 27 ways, for example, as 248699695204 + 890496082921 = 498698^2 + 943661^2 .

It is not a de Polignac number, because 1139195778125 - 2⁴ = 1139195778109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 3639602969 + ... + 3639603281.

It is an arithmetic number, because the mean of its divisors is an integer number (26893865271).

Almost surely, 2^{1139195778125} is an apocalyptic number.

It is an amenable number.

1139195778125 is a deficient number, since it is larger than the sum of its proper divisors (313072946509).

1139195778125 is an frugal number, since it uses more digits than its factorization.

1139195778125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773 (or 379 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 59.

The spelling of 1139195778125 in words is "one trillion, one hundred thirty-nine billion, one hundred ninety-five million, seven hundred seventy-eight thousand, one hundred twenty-five".