61546038929 has 2 divisors, whose sum is σ = 61546038930. Its totient is φ = 61546038928.

The previous prime is 61546038809. The next prime is 61546038937. The reversal of 61546038929 is 92983064516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52397499025 + 9148539904 = 228905^2 + 95648^2 .

It is a cyclic number.

It is not a de Polignac number, because 61546038929 - 2²⁸ = 61277603473 is a prime.

It is not a weakly prime, because it can be changed into another prime (61546031929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30773019464 + 30773019465.

It is an arithmetic number, because the mean of its divisors is an integer number (30773019465).

Almost surely, 2^61546038929 is an apocalyptic number.

It is an amenable number.

61546038929 is a deficient number, since it is larger than the sum of its proper divisors (1).

61546038929 is an equidigital number, since it uses as much as digits as its factorization.

61546038929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 53.

The spelling of 61546038929 in words is "sixty-one billion, five hundred forty-six million, thirty-eight thousand, nine hundred twenty-nine".