61688971202948 has 12 divisors (see below), whose sum is σ = 107955787689792. Its totient is φ = 30844460434440.

The previous prime is 61688971202899. The next prime is 61688971202983. The reversal of 61688971202948 is 84920217988616.

It is a super-2 number, since 2×61688971202948² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99440 + ... + 11108007.

It is an arithmetic number, because the mean of its divisors is an integer number (8996315640816).

Almost surely, 2^{61688971202948} is an apocalyptic number.

It is an amenable number.

61688971202948 is a deficient number, since it is larger than the sum of its proper divisors (46266816486844).

61688971202948 is a wasteful number, since it uses less digits than its factorization.

61688971202948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12583522 (or 12583520 counting only the distinct ones).

The product of its (nonzero) digits is 167215104, while the sum is 71.

The spelling of 61688971202948 in words is "sixty-one trillion, six hundred eighty-eight billion, nine hundred seventy-one million, two hundred two thousand, nine hundred forty-eight".