213128667466842 has 32 divisors (see below), whose sum is σ = 465890369877504. Its totient is φ = 64706995814400.

The previous prime is 213128667466807. The next prime is 213128667466901. The reversal of 213128667466842 is 248664766821312.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33701557159 + ... + 33701563482.

It is an arithmetic number, because the mean of its divisors is an integer number (14559074058672).

Almost surely, 2^{213128667466842} is an apocalyptic number.

213128667466842 is an abundant number, since it is smaller than the sum of its proper divisors (252761702410662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213128667466842 is a wasteful number, since it uses less digits than its factorization.

213128667466842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67403120694.

The product of its digits is 222953472, while the sum is 66.

The spelling of 213128667466842 in words is "two hundred thirteen trillion, one hundred twenty-eight billion, six hundred sixty-seven million, four hundred sixty-six thousand, eight hundred forty-two".