61339318895 has 8 divisors (see below), whose sum is σ = 77481245040. Its totient is φ = 46488746880.

The previous prime is 61339318891. The next prime is 61339318919. The reversal of 61339318895 is 59881393316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61339318895 - 2² = 61339318891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61339318895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61339318891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322838426 + ... + 322838615.

It is an arithmetic number, because the mean of its divisors is an integer number (9685155630).

Almost surely, 2^61339318895 is an apocalyptic number.

61339318895 is a deficient number, since it is larger than the sum of its proper divisors (16141926145).

61339318895 is a wasteful number, since it uses less digits than its factorization.

61339318895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645677065.

The product of its digits is 4199040, while the sum is 56.

The spelling of 61339318895 in words is "sixty-one billion, three hundred thirty-nine million, three hundred eighteen thousand, eight hundred ninety-five".