61037056513 has 8 divisors (see below), whose sum is σ = 64785492360. Its totient is φ = 57306178560.

The previous prime is 61037056477. The next prime is 61037056529. The reversal of 61037056513 is 31565073016.

It can be written as a sum of positive squares in 4 ways, for example, as 33398659009 + 27638397504 = 182753^2 + 166248^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61037056513 - 2¹³ = 61037048321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61037056573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4382308 + ... + 4396213.

It is an arithmetic number, because the mean of its divisors is an integer number (8098186545).

Almost surely, 2^61037056513 is an apocalyptic number.

It is an amenable number.

61037056513 is a deficient number, since it is larger than the sum of its proper divisors (3748435847).

61037056513 is a wasteful number, since it uses less digits than its factorization.

61037056513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8778947.

The product of its (nonzero) digits is 56700, while the sum is 37.

The spelling of 61037056513 in words is "sixty-one billion, thirty-seven million, fifty-six thousand, five hundred thirteen".