61037056529 has 2 divisors, whose sum is σ = 61037056530. Its totient is φ = 61037056528.

The previous prime is 61037056477. The next prime is 61037056537. The reversal of 61037056529 is 92565073016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57323372929 + 3713683600 = 239423^2 + 60940^2 .

It is a cyclic number.

It is not a de Polignac number, because 61037056529 - 2³² = 56742089233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61037056529.

It is not a weakly prime, because it can be changed into another prime (61037556529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30518528264 + 30518528265.

It is an arithmetic number, because the mean of its divisors is an integer number (30518528265).

Almost surely, 2^61037056529 is an apocalyptic number.

It is an amenable number.

61037056529 is a deficient number, since it is larger than the sum of its proper divisors (1).

61037056529 is an equidigital number, since it uses as much as digits as its factorization.

61037056529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 340200, while the sum is 44.

The spelling of 61037056529 in words is "sixty-one billion, thirty-seven million, fifty-six thousand, five hundred twenty-nine".