613561121104 has 20 divisors (see below), whose sum is σ = 1188815021460. Its totient is φ = 306770147840.

The previous prime is 613561121093. The next prime is 613561121119. The reversal of 613561121104 is 401121165316.

It can be written as a sum of positive squares in 2 ways, for example, as 421850250000 + 191710871104 = 649500^2 + 437848^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153139 + ... + 1118290.

It is an arithmetic number, because the mean of its divisors is an integer number (59440751073).

Almost surely, 2^613561121104 is an apocalyptic number.

It is an amenable number.

613561121104 is a deficient number, since it is larger than the sum of its proper divisors (575253900356).

613561121104 is a wasteful number, since it uses less digits than its factorization.

613561121104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301598 (or 1301592 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The spelling of 613561121104 in words is "six hundred thirteen billion, five hundred sixty-one million, one hundred twenty-one thousand, one hundred four".