661204534024022 has 8 divisors (see below), whose sum is σ = 991954106388336. Its totient is φ = 330553165227912.

The previous prime is 661204534024007. The next prime is 661204534024087. The reversal of 661204534024022 is 220420435402166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24550875218 + ... + 24550902149.

It is an arithmetic number, because the mean of its divisors is an integer number (123994263298542).

Almost surely, 2^{661204534024022} is an apocalyptic number.

661204534024022 is a deficient number, since it is larger than the sum of its proper divisors (330749572364314).

661204534024022 is a wasteful number, since it uses less digits than its factorization.

661204534024022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49101784102.

The product of its (nonzero) digits is 552960, while the sum is 41.

Adding to 661204534024022 its reverse (220420435402166), we get a palindrome (881624969426188).

The spelling of 661204534024022 in words is "six hundred sixty-one trillion, two hundred four billion, five hundred thirty-four million, twenty-four thousand, twenty-two".