655400123311 has 8 divisors (see below), whose sum is σ = 655972866000. Its totient is φ = 654827583360.

The previous prime is 655400123309. The next prime is 655400123341. The reversal of 655400123311 is 113321004556.

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

It is a cyclic number.

It is not a de Polignac number, because 655400123311 - 2¹ = 655400123309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655400123341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6819351 + ... + 6914791.

It is an arithmetic number, because the mean of its divisors is an integer number (81996608250).

Almost surely, 2^655400123311 is an apocalyptic number.

655400123311 is a deficient number, since it is larger than the sum of its proper divisors (572742689).

655400123311 is a wasteful number, since it uses less digits than its factorization.

655400123311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101369.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 655400123311 its reverse (113321004556), we get a palindrome (768721127867).

The spelling of 655400123311 in words is "six hundred fifty-five billion, four hundred million, one hundred twenty-three thousand, three hundred eleven".