61427719071 has 6 divisors (see below), whose sum is σ = 88728927560. Its totient is φ = 40951812708.

The previous prime is 61427719057. The next prime is 61427719117. The reversal of 61427719071 is 17091772416.

61427719071 is a `hidden beast` number, since 6 + 1 + 427 + 71 + 90 + 71 = 666.

It is not a de Polignac number, because 61427719071 - 2¹⁸ = 61427456927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61427719271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3412651051 + ... + 3412651068.

Almost surely, 2^61427719071 is an apocalyptic number.

61427719071 is a deficient number, since it is larger than the sum of its proper divisors (27301208489).

61427719071 is a wasteful number, since it uses less digits than its factorization.

61427719071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6825302125 (or 6825302122 counting only the distinct ones).

The product of its (nonzero) digits is 148176, while the sum is 45.

The spelling of 61427719071 in words is "sixty-one billion, four hundred twenty-seven million, seven hundred nineteen thousand, seventy-one".