27699525126 has 160 divisors (see below), whose sum is σ = 76839352128. Its totient is φ = 7262472960.

The previous prime is 27699525053. The next prime is 27699525157. The reversal of 27699525126 is 62152599672.

27699525126 is a `hidden beast` number, since 2 + 7 + 6 + 99 + 525 + 1 + 26 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2544936 + ... + 2555796.

Almost surely, 2^27699525126 is an apocalyptic number.

27699525126 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 27699525126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38419676064).

27699525126 is an abundant number, since it is smaller than the sum of its proper divisors (49139827002).

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

27699525126 is a wasteful number, since it uses less digits than its factorization.

27699525126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11068 (or 11059 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The spelling of 27699525126 in words is "twenty-seven billion, six hundred ninety-nine million, five hundred twenty-five thousand, one hundred twenty-six".