615600505655 has 4 divisors (see below), whose sum is σ = 738720606792. Its totient is φ = 492480404520.

The previous prime is 615600505651. The next prime is 615600505679. The reversal of 615600505655 is 556505006516.

615600505655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 615600505655 - 2² = 615600505651 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 (615600505651) 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, 61560050561 + ... + 61560050570.

It is an arithmetic number, because the mean of its divisors is an integer number (184680151698).

Almost surely, 2^615600505655 is an apocalyptic number.

615600505655 is a deficient number, since it is larger than the sum of its proper divisors (123120101137).

615600505655 is a wasteful number, since it uses less digits than its factorization.

615600505655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123120101136.

The product of its (nonzero) digits is 675000, while the sum is 44.

The spelling of 615600505655 in words is "six hundred fifteen billion, six hundred million, five hundred five thousand, six hundred fifty-five".