1357949540979 has 24 divisors (see below), whose sum is σ = 1985052635280. Its totient is φ = 894436950528.

The previous prime is 1357949540933. The next prime is 1357949541019. The reversal of 1357949540979 is 9790459497531.

1357949540979 is a `hidden beast` number, since 1 + 3 + 5 + 7 + 9 + 4 + 9 + 540 + 9 + 79 = 666.

It is not a de Polignac number, because 1357949540979 - 2⁷ = 1357949540851 is a prime.

It is a super-3 number, since 3×1357949540979³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1357949540179) 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, 385344 + ... + 1692450.

It is an arithmetic number, because the mean of its divisors is an integer number (82710526470).

Almost surely, 2^{1357949540979} is an apocalyptic number.

1357949540979 is a deficient number, since it is larger than the sum of its proper divisors (627103094301).

1357949540979 is a wasteful number, since it uses less digits than its factorization.

1357949540979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308499 (or 1308496 counting only the distinct ones).

The product of its (nonzero) digits is 385786800, while the sum is 72.

The spelling of 1357949540979 in words is "one trillion, three hundred fifty-seven billion, nine hundred forty-nine million, five hundred forty thousand, nine hundred seventy-nine".