78957241913 has 8 divisors (see below), whose sum is σ = 86375108160. Its totient is φ = 71579364880.

The previous prime is 78957241889. The next prime is 78957241919. The reversal of 78957241913 is 31914275987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78957241913 - 2²² = 78953047609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78957241919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9993170 + ... + 10001067.

It is an arithmetic number, because the mean of its divisors is an integer number (10796888520).

Almost surely, 2^78957241913 is an apocalyptic number.

It is an amenable number.

78957241913 is a deficient number, since it is larger than the sum of its proper divisors (7417866247).

78957241913 is a wasteful number, since it uses less digits than its factorization.

78957241913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19994607.

The product of its digits is 3810240, while the sum is 56.

The spelling of 78957241913 in words is "seventy-eight billion, nine hundred fifty-seven million, two hundred forty-one thousand, nine hundred thirteen".