61642827711 has 16 divisors (see below), whose sum is σ = 92608945920. Its totient is φ = 40516411320.

The previous prime is 61642827677. The next prime is 61642827731. The reversal of 61642827711 is 11772824616.

61642827711 is a `hidden beast` number, since 616 + 4 + 2 + 8 + 27 + 7 + 1 + 1 = 666.

It is not a de Polignac number, because 61642827711 - 2¹¹ = 61642825663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61642827731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16076025 + ... + 16079858.

It is an arithmetic number, because the mean of its divisors is an integer number (5788059120).

Almost surely, 2^61642827711 is an apocalyptic number.

61642827711 is a deficient number, since it is larger than the sum of its proper divisors (30966118209).

61642827711 is a wasteful number, since it uses less digits than its factorization.

61642827711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32155963 (or 32155957 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The spelling of 61642827711 in words is "sixty-one billion, six hundred forty-two million, eight hundred twenty-seven thousand, seven hundred eleven".