61026480621 has 20 divisors (see below), whose sum is σ = 91999385500. Its totient is φ = 40311063936.

The previous prime is 61026480539. The next prime is 61026480659. The reversal of 61026480621 is 12608462016.

61026480621 is a `hidden beast` number, since 6 + 1 + 0 + 2 + 648 + 0 + 6 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 50827702500 + 10198778121 = 225450^2 + 100989^2 .

It is not a de Polignac number, because 61026480621 - 2¹⁰ = 61026479597 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 (61026480661) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3447196 + ... + 3464853.

It is an arithmetic number, because the mean of its divisors is an integer number (4599969275).

Almost surely, 2^61026480621 is an apocalyptic number.

It is an amenable number.

61026480621 is a deficient number, since it is larger than the sum of its proper divisors (30972904879).

61026480621 is a wasteful number, since it uses less digits than its factorization.

61026480621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6912170 (or 6912161 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 61026480621 in words is "sixty-one billion, twenty-six million, four hundred eighty thousand, six hundred twenty-one".