615939561055 has 16 divisors (see below), whose sum is σ = 909695352384. Its totient is φ = 389869436160.

The previous prime is 615939561023. The next prime is 615939561071. The reversal of 615939561055 is 550165939516.

It is not a de Polignac number, because 615939561055 - 2⁵ = 615939561023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 615939560987 and 615939561005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 676856206 + ... + 676857115.

It is an arithmetic number, because the mean of its divisors is an integer number (56855959524).

Almost surely, 2^615939561055 is an apocalyptic number.

615939561055 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

615939561055 is a deficient number, since it is larger than the sum of its proper divisors (293755791329).

615939561055 is a wasteful number, since it uses less digits than its factorization.

615939561055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353713346.

The product of its (nonzero) digits is 5467500, while the sum is 55.

The spelling of 615939561055 in words is "six hundred fifteen billion, nine hundred thirty-nine million, five hundred sixty-one thousand, fifty-five".