61189430063 has 12 divisors (see below), whose sum is σ = 67099958640. Its totient is φ = 55604174976.

The previous prime is 61189430021. The next prime is 61189430123. The reversal of 61189430063 is 36003498116.

It is not a de Polignac number, because 61189430063 - 2⁶ = 61189429999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61189430063.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61189420063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2125643 + ... + 2154236.

It is an arithmetic number, because the mean of its divisors is an integer number (5591663220).

Almost surely, 2^61189430063 is an apocalyptic number.

61189430063 is a deficient number, since it is larger than the sum of its proper divisors (5910528577).

61189430063 is a wasteful number, since it uses less digits than its factorization.

61189430063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4279954 (or 4279925 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The spelling of 61189430063 in words is "sixty-one billion, one hundred eighty-nine million, four hundred thirty thousand, sixty-three".