656663154747142 has 8 divisors (see below), whose sum is σ = 988101971024256. Its totient is φ = 327295831072392.

The previous prime is 656663154747077. The next prime is 656663154747179. The reversal of 656663154747142 is 241747451366656.

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, 517873149798 + ... + 517873151065.

It is an arithmetic number, because the mean of its divisors is an integer number (123512746378032).

Almost surely, 2^{656663154747142} is an apocalyptic number.

656663154747142 is a deficient number, since it is larger than the sum of its proper divisors (331438816277114).

656663154747142 is a wasteful number, since it uses less digits than its factorization.

656663154747142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1035746301182.

The product of its digits is 609638400, while the sum is 67.

The spelling of 656663154747142 in words is "six hundred fifty-six trillion, six hundred sixty-three billion, one hundred fifty-four million, seven hundred forty-seven thousand, one hundred forty-two".