61574251751 has 2 divisors, whose sum is σ = 61574251752. Its totient is φ = 61574251750.

The previous prime is 61574251747. The next prime is 61574251777. The reversal of 61574251751 is 15715247516.

61574251751 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61574251751 - 2² = 61574251747 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61574251721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30787125875 + 30787125876.

It is an arithmetic number, because the mean of its divisors is an integer number (30787125876).

Almost surely, 2^61574251751 is an apocalyptic number.

61574251751 is a deficient number, since it is larger than the sum of its proper divisors (1).

61574251751 is an equidigital number, since it uses as much as digits as its factorization.

61574251751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294000, while the sum is 44.

The spelling of 61574251751 in words is "sixty-one billion, five hundred seventy-four million, two hundred fifty-one thousand, seven hundred fifty-one".