61745401927 has 4 divisors (see below), whose sum is σ = 67358620296. Its totient is φ = 56132183560.

The previous prime is 61745401901. The next prime is 61745401931. The reversal of 61745401927 is 72910454716.

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 61745401927 - 2¹¹ = 61745399879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61745401967) 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, 2806609168 + ... + 2806609189.

It is an arithmetic number, because the mean of its divisors is an integer number (16839655074).

Almost surely, 2^61745401927 is an apocalyptic number.

61745401927 is a deficient number, since it is larger than the sum of its proper divisors (5613218369).

61745401927 is a wasteful number, since it uses less digits than its factorization.

61745401927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5613218368.

The product of its (nonzero) digits is 423360, while the sum is 46.

The spelling of 61745401927 in words is "sixty-one billion, seven hundred forty-five million, four hundred one thousand, nine hundred twenty-seven".