661031610052 has 48 divisors (see below), whose sum is σ = 1336698478080. Its totient is φ = 282689395200.

The previous prime is 661031610047. The next prime is 661031610059. The reversal of 661031610052 is 250016130166.

661031610052 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 661031609996 and 661031610023.

It is not an unprimeable number, because it can be changed into a prime (661031610059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1871302 + ... + 2196322.

It is an arithmetic number, because the mean of its divisors is an integer number (27847884960).

Almost surely, 2^661031610052 is an apocalyptic number.

It is an amenable number.

661031610052 is an abundant number, since it is smaller than the sum of its proper divisors (675666868028).

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

661031610052 is a wasteful number, since it uses less digits than its factorization.

661031610052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327772 (or 327770 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 661031610052 in words is "six hundred sixty-one billion, thirty-one million, six hundred ten thousand, fifty-two".