661626333022 has 8 divisors (see below), whose sum is σ = 1001544449400. Its totient is φ = 327778183224.

The previous prime is 661626332959. The next prime is 661626333059. The reversal of 661626333022 is 220333626166.

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, 1517491372 + ... + 1517491807.

It is an arithmetic number, because the mean of its divisors is an integer number (125193056175).

Almost surely, 2^661626333022 is an apocalyptic number.

661626333022 is a deficient number, since it is larger than the sum of its proper divisors (339918116378).

661626333022 is a wasteful number, since it uses less digits than its factorization.

661626333022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3034983290.

The product of its (nonzero) digits is 279936, while the sum is 40.

Adding to 661626333022 its reverse (220333626166), we get a palindrome (881959959188).

The spelling of 661626333022 in words is "six hundred sixty-one billion, six hundred twenty-six million, three hundred thirty-three thousand, twenty-two".