400127751665 has 8 divisors (see below), whose sum is σ = 487319769600. Its totient is φ = 315324556272.

The previous prime is 400127751643. The next prime is 400127751677. The reversal of 400127751665 is 566157721004.

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 400127751665 - 2¹⁴ = 400127735281 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 597205265 + ... + 597205934.

It is an arithmetic number, because the mean of its divisors is an integer number (60914971200).

Almost surely, 2^400127751665 is an apocalyptic number.

It is an amenable number.

400127751665 is a deficient number, since it is larger than the sum of its proper divisors (87192017935).

400127751665 is a wasteful number, since it uses less digits than its factorization.

400127751665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194411271.

The product of its (nonzero) digits is 352800, while the sum is 44.

The spelling of 400127751665 in words is "four hundred billion, one hundred twenty-seven million, seven hundred fifty-one thousand, six hundred sixty-five".