3691351087864 has 96 divisors (see below), whose sum is σ = 7855785745920. Its totient is φ = 1623206376000.

The previous prime is 3691351087847. The next prime is 3691351087867. The reversal of 3691351087864 is 4687801531963.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3691351087867) 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, 94895859 + ... + 94934749.

It is an arithmetic number, because the mean of its divisors is an integer number (81831101520).

Almost surely, 2^{3691351087864} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3691351087864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3927892872960).

3691351087864 is an abundant number, since it is smaller than the sum of its proper divisors (4164434658056).

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

3691351087864 is a wasteful number, since it uses less digits than its factorization.

3691351087864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42113 (or 42098 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 61.

The spelling of 3691351087864 in words is "three trillion, six hundred ninety-one billion, three hundred fifty-one million, eighty-seven thousand, eight hundred sixty-four".