158642494879202 has 4 divisors (see below), whose sum is σ = 237963742318806. Its totient is φ = 79321247439600.

The previous prime is 158642494879163. The next prime is 158642494879213. The reversal of 158642494879202 is 202978494246851.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 148596124380001 + 10046370499201 = 12190001^2 + 3169601^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39660623719799 + ... + 39660623719802.

Almost surely, 2^{158642494879202} is an apocalyptic number.

158642494879202 is a deficient number, since it is larger than the sum of its proper divisors (79321247439604).

158642494879202 is an equidigital number, since it uses as much as digits as its factorization.

158642494879202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79321247439603.

The product of its (nonzero) digits is 557383680, while the sum is 71.

The spelling of 158642494879202 in words is "one hundred fifty-eight trillion, six hundred forty-two billion, four hundred ninety-four million, eight hundred seventy-nine thousand, two hundred two".