427665820088 has 32 divisors (see below), whose sum is σ = 864427589760. Its totient is φ = 197185000320.

The previous prime is 427665820081. The next prime is 427665820097. The reversal of 427665820088 is 880028566724.

It is a happy number.

It is a hoax number, since the sum of its digits (56) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427665820081) 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, 1971695 + ... + 2177822.

It is an arithmetic number, because the mean of its divisors is an integer number (27013362180).

Almost surely, 2^427665820088 is an apocalyptic number.

It is an amenable number.

427665820088 is an abundant number, since it is smaller than the sum of its proper divisors (436761769672).

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

427665820088 is a wasteful number, since it uses less digits than its factorization.

427665820088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150527 (or 4150523 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 427665820088 in words is "four hundred twenty-seven billion, six hundred sixty-five million, eight hundred twenty thousand, eighty-eight".