61619966796 has 48 divisors (see below), whose sum is σ = 147798554624. Its totient is φ = 19966896576.

The previous prime is 61619966743. The next prime is 61619966797. The reversal of 61619966796 is 69766991616.

It is not an unprimeable number, because it can be changed into a prime (61619966797) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 436821 + ... + 560403.

Almost surely, 2^61619966796 is an apocalyptic number.

It is an amenable number.

61619966796 is an abundant number, since it is smaller than the sum of its proper divisors (86178587828).

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

61619966796 is a wasteful number, since it uses less digits than its factorization.

61619966796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124750 (or 124748 counting only the distinct ones).

The product of its digits is 39680928, while the sum is 66.

The spelling of 61619966796 in words is "sixty-one billion, six hundred nineteen million, nine hundred sixty-six thousand, seven hundred ninety-six".