61426212165 has 128 divisors (see below), whose sum is σ = 119026483200. Its totient is φ = 29941954560.

The previous prime is 61426212161. The next prime is 61426212247. The reversal of 61426212165 is 56121262416.

61426212165 is a `hidden beast` number, since 6 + 1 + 4 + 2 + 621 + 21 + 6 + 5 = 666.

61426212165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61426212165 - 2² = 61426212161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61426212161) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 30453237 + ... + 30455253.

It is an arithmetic number, because the mean of its divisors is an integer number (929894400).

Almost surely, 2^61426212165 is an apocalyptic number.

It is an amenable number.

61426212165 is a deficient number, since it is larger than the sum of its proper divisors (57600271035).

61426212165 is a wasteful number, since it uses less digits than its factorization.

61426212165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2464 (or 2458 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The spelling of 61426212165 in words is "sixty-one billion, four hundred twenty-six million, two hundred twelve thousand, one hundred sixty-five".