61461526566 has 32 divisors (see below), whose sum is σ = 135425592576. Its totient is φ = 18440300000.

The previous prime is 61461526411. The next prime is 61461526573. The reversal of 61461526566 is 66562516416.

61461526566 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 15 ways as a sum of consecutive naturals, for example, 4603410 + ... + 4616741.

It is an arithmetic number, because the mean of its divisors is an integer number (4232049768).

Almost surely, 2^61461526566 is an apocalyptic number.

61461526566 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

61461526566 is an abundant number, since it is smaller than the sum of its proper divisors (73964066010).

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

61461526566 is a wasteful number, since it uses less digits than its factorization.

61461526566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9220268.

The product of its digits is 1555200, while the sum is 48.

The spelling of 61461526566 in words is "sixty-one billion, four hundred sixty-one million, five hundred twenty-six thousand, five hundred sixty-six".