61254646466251 has 64 divisors (see below), whose sum is σ = 73442442608640. Its totient is φ = 49988366023680.

The previous prime is 61254646466219. The next prime is 61254646466263. The reversal of 61254646466251 is 15266464645216.

It is not a de Polignac number, because 61254646466251 - 2⁵ = 61254646466219 is a prime.

It is a super-2 number, since 2×61254646466251² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61254646460251) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2953016986 + ... + 2953037728.

It is an arithmetic number, because the mean of its divisors is an integer number (1147538165760).

Almost surely, 2^{61254646466251} is an apocalyptic number.

61254646466251 is a deficient number, since it is larger than the sum of its proper divisors (12187796142389).

61254646466251 is a wasteful number, since it uses less digits than its factorization.

61254646466251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21704.

The product of its digits is 49766400, while the sum is 58.

The spelling of 61254646466251 in words is "sixty-one trillion, two hundred fifty-four billion, six hundred forty-six million, four hundred sixty-six thousand, two hundred fifty-one".