61204525566 has 16 divisors (see below), whose sum is σ = 122579308800. Its totient is φ = 20373132248.

The previous prime is 61204525483. The next prime is 61204525583. The reversal of 61204525566 is 66552540216.

It is a happy number.

61204525566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 7089396 + ... + 7098023.

It is an arithmetic number, because the mean of its divisors is an integer number (7661206800).

Almost surely, 2^61204525566 is an apocalyptic number.

61204525566 is an abundant number, since it is smaller than the sum of its proper divisors (61374783234).

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

61204525566 is a wasteful number, since it uses less digits than its factorization.

61204525566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14188143.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 61204525566 in words is "sixty-one billion, two hundred four million, five hundred twenty-five thousand, five hundred sixty-six".