61659069852 has 36 divisors (see below), whose sum is σ = 150398414600. Its totient is φ = 19659411552.

The previous prime is 61659069799. The next prime is 61659069869. The reversal of 61659069852 is 25896095616.

It is a junction number, because it is equal to n+sod(n) for n = 61659069792 and 61659069801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4850227 + ... + 4862922.

Almost surely, 2^61659069852 is an apocalyptic number.

It is an amenable number.

61659069852 is an abundant number, since it is smaller than the sum of its proper divisors (88739344748).

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

61659069852 is a wasteful number, since it uses less digits than its factorization.

61659069852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9713202 (or 9713177 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 57.

The spelling of 61659069852 in words is "sixty-one billion, six hundred fifty-nine million, sixty-nine thousand, eight hundred fifty-two".