61727225507 has 4 divisors (see below), whose sum is σ = 61736574816. Its totient is φ = 61717876200.

The previous prime is 61727225503. The next prime is 61727225543. The reversal of 61727225507 is 70552272716.

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

It is a cyclic number.

It is not a de Polignac number, because 61727225507 - 2² = 61727225503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61727225503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4664744 + ... + 4677957.

It is an arithmetic number, because the mean of its divisors is an integer number (15434143704).

Almost surely, 2^61727225507 is an apocalyptic number.

61727225507 is a deficient number, since it is larger than the sum of its proper divisors (9349309).

61727225507 is an equidigital number, since it uses as much as digits as its factorization.

61727225507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9349308.

The product of its (nonzero) digits is 411600, while the sum is 44.

The spelling of 61727225507 in words is "sixty-one billion, seven hundred twenty-seven million, two hundred twenty-five thousand, five hundred seven".