61130029747 has 2 divisors, whose sum is σ = 61130029748. Its totient is φ = 61130029746.

The previous prime is 61130029703. The next prime is 61130029771. The reversal of 61130029747 is 74792003116.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61130029747 is a prime.

It is not a weakly prime, because it can be changed into another prime (61130029777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30565014873 + 30565014874.

It is an arithmetic number, because the mean of its divisors is an integer number (30565014874).

Almost surely, 2^61130029747 is an apocalyptic number.

61130029747 is a deficient number, since it is larger than the sum of its proper divisors (1).

61130029747 is an equidigital number, since it uses as much as digits as its factorization.

61130029747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 61130029747 in words is "sixty-one billion, one hundred thirty million, twenty-nine thousand, seven hundred forty-seven".