61201515127 has 2 divisors, whose sum is σ = 61201515128. Its totient is φ = 61201515126.

The previous prime is 61201515071. The next prime is 61201515149. The reversal of 61201515127 is 72151510216.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61201515127 - 2¹⁵ = 61201482359 is a prime.

It is a super-2 number, since 2×61201515127² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61201545127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30600757563 + 30600757564.

It is an arithmetic number, because the mean of its divisors is an integer number (30600757564).

Almost surely, 2^61201515127 is an apocalyptic number.

61201515127 is a deficient number, since it is larger than the sum of its proper divisors (1).

61201515127 is an equidigital number, since it uses as much as digits as its factorization.

61201515127 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4200, while the sum is 31.

The spelling of 61201515127 in words is "sixty-one billion, two hundred one million, five hundred fifteen thousand, one hundred twenty-seven".