661822414510270 has 32 divisors (see below), whose sum is σ = 1358383019107968. Its totient is φ = 229990775720448.

The previous prime is 661822414510237. The next prime is 661822414510291. The reversal of 661822414510270 is 72015414228166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149733575734 + ... + 149733580153.

It is an arithmetic number, because the mean of its divisors is an integer number (42449469347124).

Almost surely, 2^{661822414510270} is an apocalyptic number.

661822414510270 is an abundant number, since it is smaller than the sum of its proper divisors (696560604597698).

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

661822414510270 is a wasteful number, since it uses less digits than its factorization.

661822414510270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299467155924.

The product of its (nonzero) digits is 1290240, while the sum is 49.

The spelling of 661822414510270 in words is "six hundred sixty-one trillion, eight hundred twenty-two billion, four hundred fourteen million, five hundred ten thousand, two hundred seventy".