61397419768 has 16 divisors (see below), whose sum is σ = 118833716160. Its totient is φ = 29708428800.

The previous prime is 61397419739. The next prime is 61397419801. The reversal of 61397419768 is 86791479316.

61397419768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123784873 + ... + 123785368.

It is an arithmetic number, because the mean of its divisors is an integer number (7427107260).

Almost surely, 2^61397419768 is an apocalyptic number.

It is an amenable number.

61397419768 is a deficient number, since it is larger than the sum of its proper divisors (57436296392).

61397419768 is a wasteful number, since it uses less digits than its factorization.

61397419768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247570278 (or 247570274 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 61.

The spelling of 61397419768 in words is "sixty-one billion, three hundred ninety-seven million, four hundred nineteen thousand, seven hundred sixty-eight".