6461560615655 has 8 divisors (see below), whose sum is σ = 7759261123200. Its totient is φ = 5165656236256.

The previous prime is 6461560615621. The next prime is 6461560615681. The reversal of 6461560615655 is 5565160651646.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6461560615655 - 2⁶ = 6461560615591 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6461560615655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 449024120 + ... + 449038509.

It is an arithmetic number, because the mean of its divisors is an integer number (969907640400).

Almost surely, 2^{6461560615655} is an apocalyptic number.

6461560615655 is a deficient number, since it is larger than the sum of its proper divisors (1297700507545).

6461560615655 is a wasteful number, since it uses less digits than its factorization.

6461560615655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898064073.

The product of its (nonzero) digits is 19440000, while the sum is 56.

The spelling of 6461560615655 in words is "six trillion, four hundred sixty-one billion, five hundred sixty million, six hundred fifteen thousand, six hundred fifty-five".