3972843632251 has 16 divisors (see below), whose sum is σ = 4585127690304. Its totient is φ = 3412989765504.

The previous prime is 3972843632221. The next prime is 3972843632279. The reversal of 3972843632251 is 1522363482793.

It is a cyclic number.

It is not a de Polignac number, because 3972843632251 - 2²⁷ = 3972709414523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3972843632192 and 3972843632201.

It is not an unprimeable number, because it can be changed into a prime (3972843632221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179544376 + ... + 179566501.

It is an arithmetic number, because the mean of its divisors is an integer number (286570480644).

Almost surely, 2^{3972843632251} is an apocalyptic number.

3972843632251 is a deficient number, since it is larger than the sum of its proper divisors (612284058053).

3972843632251 is a wasteful number, since it uses less digits than its factorization.

3972843632251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359110950.

The product of its digits is 13063680, while the sum is 55.

The spelling of 3972843632251 in words is "three trillion, nine hundred seventy-two billion, eight hundred forty-three million, six hundred thirty-two thousand, two hundred fifty-one".