661480497882 has 24 divisors (see below), whose sum is σ = 1433222889696. Its totient is φ = 220491169416.

The previous prime is 661480497869. The next prime is 661480497913. The reversal of 661480497882 is 288794084166.

661480497882 is a `hidden beast` number, since 6 + 6 + 1 + 480 + 4 + 9 + 78 + 82 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2828133 + ... + 3053079.

It is an arithmetic number, because the mean of its divisors is an integer number (59717620404).

Almost surely, 2^661480497882 is an apocalyptic number.

661480497882 is an abundant number, since it is smaller than the sum of its proper divisors (771742391814).

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

661480497882 is a wasteful number, since it uses less digits than its factorization.

661480497882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388322 (or 388319 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 63.

The spelling of 661480497882 in words is "six hundred sixty-one billion, four hundred eighty million, four hundred ninety-seven thousand, eight hundred eighty-two".