3722797279721 has 32 divisors (see below), whose sum is σ = 4077515635200. Its totient is φ = 3378247741440.

The previous prime is 3722797279679. The next prime is 3722797279757. The reversal of 3722797279721 is 1279727972273.

It is not a de Polignac number, because 3722797279721 - 2¹⁴ = 3722797263337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3722797279321) 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, 275002265 + ... + 275015801.

It is an arithmetic number, because the mean of its divisors is an integer number (127422363600).

Almost surely, 2^{3722797279721} is an apocalyptic number.

It is an amenable number.

3722797279721 is a deficient number, since it is larger than the sum of its proper divisors (354718355479).

3722797279721 is a wasteful number, since it uses less digits than its factorization.

3722797279721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14769.

The product of its digits is 65345616, while the sum is 65.

The spelling of 3722797279721 in words is "three trillion, seven hundred twenty-two billion, seven hundred ninety-seven million, two hundred seventy-nine thousand, seven hundred twenty-one".