3691042972127 has 32 divisors (see below), whose sum is σ = 4490366077440. Its totient is φ = 2961752555520.

The previous prime is 3691042972117. The next prime is 3691042972157. The reversal of 3691042972127 is 7212792401963.

It is not a de Polignac number, because 3691042972127 - 2¹² = 3691042968031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3691042972117) 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, 21045524 + ... + 21220182.

It is an arithmetic number, because the mean of its divisors is an integer number (140323939920).

Almost surely, 2^{3691042972127} is an apocalyptic number.

3691042972127 is a deficient number, since it is larger than the sum of its proper divisors (799323105313).

3691042972127 is a wasteful number, since it uses less digits than its factorization.

3691042972127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175631.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 3691042972127 in words is "three trillion, six hundred ninety-one billion, forty-two million, nine hundred seventy-two thousand, one hundred twenty-seven".