61256436115061 has 6 divisors (see below), whose sum is σ = 67331454572886. Its totient is φ = 55687669195400.

The previous prime is 61256436115033. The next prime is 61256436115097. The reversal of 61256436115061 is 16051163465216.

It can be written as a sum of positive squares in only one way, i.e., 57138012342961 + 4118423772100 = 7558969^2 + 2029390^2 .

It is not a de Polignac number, because 61256436115061 - 2⁶ = 61256436114997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61256436114997 and 61256436115015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61256436115261) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 253125768950 + ... + 253125769191.

It is an arithmetic number, because the mean of its divisors is an integer number (11221909095481).

Almost surely, 2^{61256436115061} is an apocalyptic number.

It is an amenable number.

61256436115061 is a deficient number, since it is larger than the sum of its proper divisors (6075018457825).

61256436115061 is a wasteful number, since it uses less digits than its factorization.

61256436115061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506251538163 (or 506251538152 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 61256436115061 in words is "sixty-one trillion, two hundred fifty-six billion, four hundred thirty-six million, one hundred fifteen thousand, sixty-one".