61698733704 has 24 divisors (see below), whose sum is σ = 167100737310. Its totient is φ = 20566244544.

The previous prime is 61698733693. The next prime is 61698733717. The reversal of 61698733704 is 40733789616.

It can be written as a sum of positive squares in only one way, i.e., 43140120804 + 18558612900 = 207702^2 + 136230^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 428463357 + ... + 428463500.

Almost surely, 2^61698733704 is an apocalyptic number.

It is an amenable number.

61698733704 is an abundant number, since it is smaller than the sum of its proper divisors (105402003606).

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

61698733704 is a wasteful number, since it uses less digits than its factorization.

61698733704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856926869 (or 856926862 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 61698733704 in words is "sixty-one billion, six hundred ninety-eight million, seven hundred thirty-three thousand, seven hundred four".