4001615642653 has 4 divisors (see below), whose sum is σ = 4175598931488. Its totient is φ = 3827632353820.

The previous prime is 4001615642603. The next prime is 4001615642659. The reversal of 4001615642653 is 3562465161004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4001615642653 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 (4001615642659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86991644383 + ... + 86991644428.

It is an arithmetic number, because the mean of its divisors is an integer number (1043899732872).

Almost surely, 2^{4001615642653} is an apocalyptic number.

It is an amenable number.

4001615642653 is a deficient number, since it is larger than the sum of its proper divisors (173983288835).

4001615642653 is a wasteful number, since it uses less digits than its factorization.

4001615642653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173983288834.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 4001615642653 in words is "four trillion, one billion, six hundred fifteen million, six hundred forty-two thousand, six hundred fifty-three".