61565000523 has 32 divisors (see below), whose sum is σ = 93638393856. Its totient is φ = 35643345408.

The previous prime is 61565000507. The next prime is 61565000543. The reversal of 61565000523 is 32500056516.

It is not a de Polignac number, because 61565000523 - 2⁴ = 61565000507 is a prime.

It is a super-3 number, since 3×61565000523³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (61565000503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1777590 + ... + 1811892.

It is an arithmetic number, because the mean of its divisors is an integer number (2926199808).

Almost surely, 2^61565000523 is an apocalyptic number.

61565000523 is a deficient number, since it is larger than the sum of its proper divisors (32073393333).

61565000523 is a wasteful number, since it uses less digits than its factorization.

61565000523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37043.

The product of its (nonzero) digits is 27000, while the sum is 33.

The spelling of 61565000523 in words is "sixty-one billion, five hundred sixty-five million, five hundred twenty-three", and thus it is an aban number.