61461535147 has 2 divisors, whose sum is σ = 61461535148. Its totient is φ = 61461535146.

The previous prime is 61461535087. The next prime is 61461535169. The reversal of 61461535147 is 74153516416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61461535147 - 2²³ = 61453146539 is a prime.

It is not a weakly prime, because it can be changed into another prime (61461535747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30730767573 + 30730767574.

It is an arithmetic number, because the mean of its divisors is an integer number (30730767574).

Almost surely, 2^61461535147 is an apocalyptic number.

61461535147 is a deficient number, since it is larger than the sum of its proper divisors (1).

61461535147 is an equidigital number, since it uses as much as digits as its factorization.

61461535147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The spelling of 61461535147 in words is "sixty-one billion, four hundred sixty-one million, five hundred thirty-five thousand, one hundred forty-seven".