661706396202 has 32 divisors (see below), whose sum is σ = 1370828289600. Its totient is φ = 212686000128.

The previous prime is 661706396201. The next prime is 661706396243. The reversal of 661706396202 is 202693607166.

It is not an unprimeable number, because it can be changed into a prime (661706396201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2338828 + ... + 2606439.

It is an arithmetic number, because the mean of its divisors is an integer number (42838384050).

Almost surely, 2^661706396202 is an apocalyptic number.

661706396202 is an abundant number, since it is smaller than the sum of its proper divisors (709121893398).

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

661706396202 is a wasteful number, since it uses less digits than its factorization.

661706396202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4946070.

The product of its (nonzero) digits is 979776, while the sum is 48.

The spelling of 661706396202 in words is "six hundred sixty-one billion, seven hundred six million, three hundred ninety-six thousand, two hundred two".