61563564316 has 24 divisors (see below), whose sum is σ = 108675453600. Its totient is φ = 30514258752.

The previous prime is 61563564311. The next prime is 61563564319. The reversal of 61563564316 is 61346536516.

It is a happy number.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61563564311) 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 7 ways as a sum of consecutive naturals, for example, 197110 + ... + 402466.

It is an arithmetic number, because the mean of its divisors is an integer number (4528143900).

Almost surely, 2^61563564316 is an apocalyptic number.

It is an amenable number.

61563564316 is a deficient number, since it is larger than the sum of its proper divisors (47111889284).

61563564316 is a wasteful number, since it uses less digits than its factorization.

61563564316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206013 (or 206011 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 46.

The spelling of 61563564316 in words is "sixty-one billion, five hundred sixty-three million, five hundred sixty-four thousand, three hundred sixteen".