61405641522 has 24 divisors (see below), whose sum is σ = 133083587520. Its totient is φ = 20462696280.

The previous prime is 61405641497. The next prime is 61405641527. The reversal of 61405641522 is 22514650416.

61405641522 is a `hidden beast` number, since 6 + 1 + 4 + 0 + 5 + 641 + 5 + 2 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (61405641527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 422622 + ... + 549017.

It is an arithmetic number, because the mean of its divisors is an integer number (5545149480).

Almost surely, 2^61405641522 is an apocalyptic number.

61405641522 is an abundant number, since it is smaller than the sum of its proper divisors (71677945998).

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

61405641522 is a wasteful number, since it uses less digits than its factorization.

61405641522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975158 (or 975155 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 61405641522 in words is "sixty-one billion, four hundred five million, six hundred forty-one thousand, five hundred twenty-two".