61618013395552 has 48 divisors (see below), whose sum is σ = 127703050599600. Its totient is φ = 29185691351040.

The previous prime is 61618013395517. The next prime is 61618013395583. The reversal of 61618013395552 is 25559331081616.

It is a junction number, because it is equal to n+sod(n) for n = 61618013395493 and 61618013395502.

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, 6850324 + ... + 13044652.

It is an arithmetic number, because the mean of its divisors is an integer number (2660480220825).

Almost surely, 2^{61618013395552} is an apocalyptic number.

It is an amenable number.

61618013395552 is an abundant number, since it is smaller than the sum of its proper divisors (66085037204048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61618013395552 is a wasteful number, since it uses less digits than its factorization.

61618013395552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6210719 (or 6210711 counting only the distinct ones).

The product of its (nonzero) digits is 5832000, while the sum is 55.

The spelling of 61618013395552 in words is "sixty-one trillion, six hundred eighteen billion, thirteen million, three hundred ninety-five thousand, five hundred fifty-two".