158779391403 has 8 divisors (see below), whose sum is σ = 216869412816. Its totient is φ = 103271148800.

The previous prime is 158779391359. The next prime is 158779391479. The reversal of 158779391403 is 304193977851.

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 158779391403 - 2⁶ = 158779391339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158779391503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 645444558 + ... + 645444803.

It is an arithmetic number, because the mean of its divisors is an integer number (27108676602).

Almost surely, 2^158779391403 is an apocalyptic number.

158779391403 is a deficient number, since it is larger than the sum of its proper divisors (58090021413).

158779391403 is a wasteful number, since it uses less digits than its factorization.

158779391403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290889405.

The product of its (nonzero) digits is 5715360, while the sum is 57.

The spelling of 158779391403 in words is "one hundred fifty-eight billion, seven hundred seventy-nine million, three hundred ninety-one thousand, four hundred three".