61522949617 has 8 divisors (see below), whose sum is σ = 61618939200. Its totient is φ = 61427015664.

The previous prime is 61522949599. The next prime is 61522949693. The reversal of 61522949617 is 71694922516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61522949617 - 2⁷ = 61522949489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61522941617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2561259 + ... + 2585167.

It is an arithmetic number, because the mean of its divisors is an integer number (7702367400).

Almost surely, 2^61522949617 is an apocalyptic number.

It is an amenable number.

61522949617 is a deficient number, since it is larger than the sum of its proper divisors (95989583).

61522949617 is a wasteful number, since it uses less digits than its factorization.

61522949617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27815.

The product of its digits is 1632960, while the sum is 52.

The spelling of 61522949617 in words is "sixty-one billion, five hundred twenty-two million, nine hundred forty-nine thousand, six hundred seventeen".