61461855151 has 2 divisors, whose sum is σ = 61461855152. Its totient is φ = 61461855150.

The previous prime is 61461855113. The next prime is 61461855163. The reversal of 61461855151 is 15155816416.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61461855151 - 2³¹ = 59314371503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61461855098 and 61461855107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61461855451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30730927575 + 30730927576.

It is an arithmetic number, because the mean of its divisors is an integer number (30730927576).

Almost surely, 2^61461855151 is an apocalyptic number.

61461855151 is a deficient number, since it is larger than the sum of its proper divisors (1).

61461855151 is an equidigital number, since it uses as much as digits as its factorization.

61461855151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144000, while the sum is 43.

The spelling of 61461855151 in words is "sixty-one billion, four hundred sixty-one million, eight hundred fifty-five thousand, one hundred fifty-one".