27899662032 has 480 divisors, whose sum is σ = 93360024576. Its totient is φ = 7983360000.

The previous prime is 27899662031. The next prime is 27899662033. The reversal of 27899662032 is 23026699872.

It is a happy number.

27899662032 is a `hidden beast` number, since 2 + 7 + 8 + 9 + 9 + 6 + 620 + 3 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (27899662031) and next prime (27899662033).

It is a super-2 number, since 2×27899662032² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 27899662032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27899662031) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 111153907 + ... + 111154157.

Almost surely, 2^27899662032 is an apocalyptic number.

27899662032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27899662032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46680012288).

27899662032 is an abundant number, since it is smaller than the sum of its proper divisors (65460362544).

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

27899662032 is a wasteful number, since it uses less digits than its factorization.

27899662032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 27899662032 in words is "twenty-seven billion, eight hundred ninety-nine million, six hundred sixty-two thousand, thirty-two".