61147995369 has 8 divisors (see below), whose sum is σ = 81551640480. Its totient is φ = 40754840256.

The previous prime is 61147995301. The next prime is 61147995371. The reversal of 61147995369 is 96359974116.

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

It is not a de Polignac number, because 61147995369 - 2⁹ = 61147994857 is a prime.

It is a super-2 number, since 2×61147995369² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61147795369) 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, 2608887 + ... + 2632220.

It is an arithmetic number, because the mean of its divisors is an integer number (10193955060).

Almost surely, 2^61147995369 is an apocalyptic number.

It is an amenable number.

61147995369 is a deficient number, since it is larger than the sum of its proper divisors (20403645111).

61147995369 is a wasteful number, since it uses less digits than its factorization.

61147995369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5244999.

The product of its digits is 11022480, while the sum is 60.

The spelling of 61147995369 in words is "sixty-one billion, one hundred forty-seven million, nine hundred ninety-five thousand, three hundred sixty-nine".