61663922936616 has 128 divisors (see below), whose sum is σ = 206983797350400. Its totient is φ = 14784556942080.

The previous prime is 61663922936597. The next prime is 61663922936713.

61663922936616 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1283357656 + ... + 1283405703.

It is an arithmetic number, because the mean of its divisors is an integer number (1617060916800).

Almost surely, 2^{61663922936616} is an apocalyptic number.

61663922936616 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

61663922936616 is an abundant number, since it is smaller than the sum of its proper divisors (145319874413784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61663922936616 is a wasteful number, since it uses less digits than its factorization.

61663922936616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2566763399 (or 2566763395 counting only the distinct ones).

The product of its digits is 136048896, while the sum is 66.

The spelling of 61663922936616 in words is "sixty-one trillion, six hundred sixty-three billion, nine hundred twenty-two million, nine hundred thirty-six thousand, six hundred sixteen".