61985386396 has 6 divisors (see below), whose sum is σ = 108474426200. Its totient is φ = 30992693196.

The previous prime is 61985386391. The next prime is 61985386399. The reversal of 61985386396 is 69368358916.

It is a super-2 number, since 2×61985386396² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61985386391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7748173296 + ... + 7748173303.

Almost surely, 2^61985386396 is an apocalyptic number.

It is an amenable number.

61985386396 is a deficient number, since it is larger than the sum of its proper divisors (46489039804).

61985386396 is a wasteful number, since it uses less digits than its factorization.

61985386396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15496346603 (or 15496346601 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 64.

The spelling of 61985386396 in words is "sixty-one billion, nine hundred eighty-five million, three hundred eighty-six thousand, three hundred ninety-six".