3691806629472 has 144 divisors (see below), whose sum is σ = 11411824067280. Its totient is φ = 1125324112896.

The previous prime is 3691806629471. The next prime is 3691806629477. The reversal of 3691806629472 is 2749266081963.

3691806629472 is a `hidden beast` number, since 3 + 6 + 9 + 1 + 80 + 66 + 29 + 472 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3691806629471) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4207147 + ... + 5008362.

It is an arithmetic number, because the mean of its divisors is an integer number (79248778245).

Almost surely, 2^{3691806629472} is an apocalyptic number.

3691806629472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3691806629472 is an abundant number, since it is smaller than the sum of its proper divisors (7720017437808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3691806629472 is a wasteful number, since it uses less digits than its factorization.

3691806629472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9215645 (or 9215634 counting only the distinct ones).

The product of its (nonzero) digits is 47029248, while the sum is 63.

The spelling of 3691806629472 in words is "three trillion, six hundred ninety-one billion, eight hundred six million, six hundred twenty-nine thousand, four hundred seventy-two".