661362098152 has 64 divisors (see below), whose sum is σ = 1432961187840. Its totient is φ = 280303934400.

The previous prime is 661362098147. The next prime is 661362098153. The reversal of 661362098152 is 251890263166.

It is a junction number, because it is equal to n+sod(n) for n = 661362098096 and 661362098105.

It is not an unprimeable number, because it can be changed into a prime (661362098153) 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, 2062327 + ... + 2361337.

It is an arithmetic number, because the mean of its divisors is an integer number (22390018560).

Almost surely, 2^661362098152 is an apocalyptic number.

It is an amenable number.

661362098152 is an abundant number, since it is smaller than the sum of its proper divisors (771599089688).

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

661362098152 is a wasteful number, since it uses less digits than its factorization.

661362098152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299462 (or 299458 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 661362098152 in words is "six hundred sixty-one billion, three hundred sixty-two million, ninety-eight thousand, one hundred fifty-two".