42102615664 has 20 divisors (see below), whose sum is σ = 81663389280. Its totient is φ = 21028192640.

The previous prime is 42102615649. The next prime is 42102615689. The reversal of 42102615664 is 46651620124.

42102615664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1429669 + ... + 1458820.

It is an arithmetic number, because the mean of its divisors is an integer number (4083169464).

Almost surely, 2^42102615664 is an apocalyptic number.

It is an amenable number.

42102615664 is a deficient number, since it is larger than the sum of its proper divisors (39560773616).

42102615664 is a wasteful number, since it uses less digits than its factorization.

42102615664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889408 (or 2889402 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 42102615664 in words is "forty-two billion, one hundred two million, six hundred fifteen thousand, six hundred sixty-four".