61260601251 has 4 divisors (see below), whose sum is σ = 81680801672. Its totient is φ = 40840400832.

The previous prime is 61260601159. The next prime is 61260601261. The reversal of 61260601251 is 15210606216.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61260601251 - 2²⁹ = 60723730339 is a prime.

It is a super-2 number, since 2×61260601251² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61260601261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10210100206 + ... + 10210100211.

It is an arithmetic number, because the mean of its divisors is an integer number (20420200418).

Almost surely, 2^61260601251 is an apocalyptic number.

61260601251 is a deficient number, since it is larger than the sum of its proper divisors (20420200421).

61260601251 is a wasteful number, since it uses less digits than its factorization.

61260601251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20420200420.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 61260601251 in words is "sixty-one billion, two hundred sixty million, six hundred one thousand, two hundred fifty-one".