62666142721 has 32 divisors (see below), whose sum is σ = 80394648320. Its totient is φ = 47521748736.

The previous prime is 62666142719. The next prime is 62666142731. The reversal of 62666142721 is 12724166626.

It is not a de Polignac number, because 62666142721 - 2¹ = 62666142719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (62666142731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86695 + ... + 364483.

It is an arithmetic number, because the mean of its divisors is an integer number (2512332760).

Almost surely, 2^62666142721 is an apocalyptic number.

It is an amenable number.

62666142721 is a deficient number, since it is larger than the sum of its proper divisors (17728505599).

62666142721 is a wasteful number, since it uses less digits than its factorization.

62666142721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277913.

The product of its digits is 290304, while the sum is 43.

The spelling of 62666142721 in words is "sixty-two billion, six hundred sixty-six million, one hundred forty-two thousand, seven hundred twenty-one".