72134449202698 has 16 divisors (see below), whose sum is σ = 109174542372936. Its totient is φ = 35743024737280.

The previous prime is 72134449202687. The next prime is 72134449202719. The reversal of 72134449202698 is 89620294443127.

It can be written as a sum of positive squares in 4 ways, for example, as 4808928827329 + 67325520375369 = 2192927^2 + 8205213^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20801761 + ... + 24020452.

Almost surely, 2^{72134449202698} is an apocalyptic number.

72134449202698 is a deficient number, since it is larger than the sum of its proper divisors (37040093170238).

72134449202698 is a wasteful number, since it uses less digits than its factorization.

72134449202698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44829449.

The product of its (nonzero) digits is 41803776, while the sum is 61.

The spelling of 72134449202698 in words is "seventy-two trillion, one hundred thirty-four billion, four hundred forty-nine million, two hundred two thousand, six hundred ninety-eight".