3678541314721 has 32 divisors (see below), whose sum is σ = 4744692646400. Its totient is φ = 2831832093888.

The previous prime is 3678541314703. The next prime is 3678541314731. The reversal of 3678541314721 is 1274131458763.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-3678541314721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3678541314731) 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, 10983261 + ... + 11313226.

It is an arithmetic number, because the mean of its divisors is an integer number (148271645200).

Almost surely, 2^{3678541314721} is an apocalyptic number.

It is an amenable number.

3678541314721 is a deficient number, since it is larger than the sum of its proper divisors (1066151331679).

3678541314721 is a wasteful number, since it uses less digits than its factorization.

3678541314721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22296558 (or 22296544 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 52.

The spelling of 3678541314721 in words is "three trillion, six hundred seventy-eight billion, five hundred forty-one million, three hundred fourteen thousand, seven hundred twenty-one".