613661215641063 has 16 divisors (see below), whose sum is σ = 818462399803776. Its totient is φ = 408983761280160.

The previous prime is 613661215641013. The next prime is 613661215641119. The reversal of 613661215641063 is 360146512166316.

It is not a de Polignac number, because 613661215641063 - 2⁶ = 613661215640999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 613661215640997 and 613661215641015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (613661215641013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 357499281 + ... + 359211717.

It is an arithmetic number, because the mean of its divisors is an integer number (51153899987736).

Almost surely, 2^{613661215641063} is an apocalyptic number.

613661215641063 is a deficient number, since it is larger than the sum of its proper divisors (204801184162713).

613661215641063 is a wasteful number, since it uses less digits than its factorization.

613661215641063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1748494.

The product of its (nonzero) digits is 2799360, while the sum is 51.

The spelling of 613661215641063 in words is "six hundred thirteen trillion, six hundred sixty-one billion, two hundred fifteen million, six hundred forty-one thousand, sixty-three".