1258078016331 has 12 divisors (see below), whose sum is σ = 1848024205560. Its totient is φ = 824503106400.

The previous prime is 1258078016311. The next prime is 1258078016353. The reversal of 1258078016331 is 1336108708521.

It is a happy number.

1258078016331 is a `hidden beast` number, since 1 + 2 + 5 + 8 + 0 + 7 + 8 + 0 + 1 + 633 + 1 = 666.

It is not a de Polignac number, because 1258078016331 - 2¹⁰ = 1258078015307 is a prime.

It is a super-2 number, since 2×1258078016331² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1258078016311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1184630370 + ... + 1184631431.

It is an arithmetic number, because the mean of its divisors is an integer number (154002017130).

Almost surely, 2^{1258078016331} is an apocalyptic number.

1258078016331 is a deficient number, since it is larger than the sum of its proper divisors (589946189229).

1258078016331 is a wasteful number, since it uses less digits than its factorization.

1258078016331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2369261866 (or 2369261863 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 1258078016331 in words is "one trillion, two hundred fifty-eight billion, seventy-eight million, sixteen thousand, three hundred thirty-one".