61506000105 has 16 divisors (see below), whose sum is σ = 107355927744. Its totient is φ = 29821090880.

The previous prime is 61506000047. The next prime is 61506000107. The reversal of 61506000105 is 50100060516.

It is not a de Polignac number, because 61506000105 - 2⁶ = 61506000041 is a prime.

It is a super-2 number, since 2×61506000105² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61506000107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186381654 + ... + 186381983.

It is an arithmetic number, because the mean of its divisors is an integer number (6709745484).

Almost surely, 2^61506000105 is an apocalyptic number.

It is an amenable number.

61506000105 is a deficient number, since it is larger than the sum of its proper divisors (45849927639).

61506000105 is a wasteful number, since it uses less digits than its factorization.

61506000105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372763656.

The product of its (nonzero) digits is 900, while the sum is 24.

The spelling of 61506000105 in words is "sixty-one billion, five hundred six million, one hundred five", and thus it is an aban number.