3452721472737 has 6 divisors (see below), whose sum is σ = 4987264349522. Its totient is φ = 2301814315152.

The previous prime is 3452721472699. The next prime is 3452721472843. The reversal of 3452721472737 is 7372741272543.

3452721472737 is a `hidden beast` number, since 3 + 4 + 527 + 2 + 1 + 47 + 2 + 73 + 7 = 666.

3452721472737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3384713178081 + 68008294656 = 1839759^2 + 260784^2 .

It is not a de Polignac number, because 3452721472737 - 2²³ = 3452713084129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3452721472237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 191817859588 + ... + 191817859605.

Almost surely, 2^{3452721472737} is an apocalyptic number.

It is an amenable number.

3452721472737 is a deficient number, since it is larger than the sum of its proper divisors (1534542876785).

3452721472737 is a wasteful number, since it uses less digits than its factorization.

3452721472737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383635719199 (or 383635719196 counting only the distinct ones).

The product of its digits is 13829760, while the sum is 54.

The spelling of 3452721472737 in words is "three trillion, four hundred fifty-two billion, seven hundred twenty-one million, four hundred seventy-two thousand, seven hundred thirty-seven".