61349946775 has 12 divisors (see below), whose sum is σ = 81925775512. Its totient is φ = 45304575840.

The previous prime is 61349946689. The next prime is 61349946821. The reversal of 61349946775 is 57764994316.

It is a de Polignac number, because none of the positive numbers 2^k-61349946775 is a prime.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94384209 + ... + 94384858.

Almost surely, 2^61349946775 is an apocalyptic number.

61349946775 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61349946775 is a deficient number, since it is larger than the sum of its proper divisors (20575828737).

61349946775 is a wasteful number, since it uses less digits than its factorization.

61349946775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188769090 (or 188769085 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 61.

The spelling of 61349946775 in words is "sixty-one billion, three hundred forty-nine million, nine hundred forty-six thousand, seven hundred seventy-five".