61620802616 has 16 divisors (see below), whose sum is σ = 115947274200. Its totient is φ = 30701529504.

The previous prime is 61620802601. The next prime is 61620802631.

61620802616 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (61620802601) and next prime (61620802631).

It is a self number, because there is not a number n which added to its sum of digits gives 61620802616.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13606571 + ... + 13611098.

Almost surely, 2^61620802616 is an apocalyptic number.

It is an amenable number.

61620802616 is a deficient number, since it is larger than the sum of its proper divisors (54326471584).

61620802616 is a wasteful number, since it uses less digits than its factorization.

61620802616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27217958 (or 27217954 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The spelling of 61620802616 in words is "sixty-one billion, six hundred twenty million, eight hundred two thousand, six hundred sixteen".