3740233031721 has 10 divisors (see below), whose sum is σ = 5587261689482. Its totient is φ = 2493488687760.

The previous prime is 3740233031707. The next prime is 3740233031779. The reversal of 3740233031721 is 1271303320473.

3740233031721 is a `hidden beast` number, since 3 + 7 + 4 + 0 + 2 + 330 + 317 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3736531526121 + 3701505600 = 1933011^2 + 60840^2 .

It is not a de Polignac number, because 3740233031721 - 2⁹ = 3740233031209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3740233031021) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23087858140 + ... + 23087858301.

Almost surely, 2^{3740233031721} is an apocalyptic number.

It is an amenable number.

3740233031721 is a deficient number, since it is larger than the sum of its proper divisors (1847028657761).

3740233031721 is an equidigital number, since it uses as much as digits as its factorization.

3740233031721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46175716453 (or 46175716444 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 36.

The spelling of 3740233031721 in words is "three trillion, seven hundred forty billion, two hundred thirty-three million, thirty-one thousand, seven hundred twenty-one".