661073536334 has 16 divisors (see below), whose sum is σ = 993717882000. Its totient is φ = 329834403840.

The previous prime is 661073536303. The next prime is 661073536379. The reversal of 661073536334 is 433635370166.

It is a super-2 number, since 2×661073536334² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9286862 + ... + 9357774.

It is an arithmetic number, because the mean of its divisors is an integer number (62107367625).

Almost surely, 2^661073536334 is an apocalyptic number.

661073536334 is a deficient number, since it is larger than the sum of its proper divisors (332644345666).

661073536334 is a wasteful number, since it uses less digits than its factorization.

661073536334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80755.

The product of its (nonzero) digits is 2449440, while the sum is 47.

The spelling of 661073536334 in words is "six hundred sixty-one billion, seventy-three million, five hundred thirty-six thousand, three hundred thirty-four".