61299844063 has 2 divisors, whose sum is σ = 61299844064. Its totient is φ = 61299844062.

The previous prime is 61299844061. The next prime is 61299844157. The reversal of 61299844063 is 36044899216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61299844063 - 2¹ = 61299844061 is a prime.

Together with 61299844061, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61299844063.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61299844061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30649922031 + 30649922032.

It is an arithmetic number, because the mean of its divisors is an integer number (30649922032).

Almost surely, 2^61299844063 is an apocalyptic number.

61299844063 is a deficient number, since it is larger than the sum of its proper divisors (1).

61299844063 is an equidigital number, since it uses as much as digits as its factorization.

61299844063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 52.

The spelling of 61299844063 in words is "sixty-one billion, two hundred ninety-nine million, eight hundred forty-four thousand, sixty-three".