61105015075 has 48 divisors (see below), whose sum is σ = 86512518400. Its totient is φ = 42440630400.

The previous prime is 61105015003. The next prime is 61105015079. The reversal of 61105015075 is 57051050116.

It is not a de Polignac number, because 61105015075 - 2³³ = 52515080483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61105015079) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 822730 + ... + 893920.

Almost surely, 2^61105015075 is an apocalyptic number.

61105015075 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61105015075 is a deficient number, since it is larger than the sum of its proper divisors (25407503325).

61105015075 is a wasteful number, since it uses less digits than its factorization.

61105015075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71372 (or 71367 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 31.

The spelling of 61105015075 in words is "sixty-one billion, one hundred five million, fifteen thousand, seventy-five".