27250639650 has 336 divisors, whose sum is σ = 82652834880. Its totient is φ = 6641481600.

The previous prime is 27250639649. The next prime is 27250639657. The reversal of 27250639650 is 5693605272.

27250639650 is a `hidden beast` number, since 2 + 7 + 2 + 5 + 0 + 639 + 6 + 5 + 0 = 666.

It is a super-2 number, since 2×27250639650² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 27250639596 and 27250639605.

It is not an unprimeable number, because it can be changed into a prime (27250639657) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 62074131 + ... + 62074569.

It is an arithmetic number, because the mean of its divisors is an integer number (245990580).

Almost surely, 2^27250639650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27250639650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41326417440).

27250639650 is an abundant number, since it is smaller than the sum of its proper divisors (55402195230).

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

27250639650 is a wasteful number, since it uses less digits than its factorization.

27250639650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613 (or 593 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 45.

The spelling of 27250639650 in words is "twenty-seven billion, two hundred fifty million, six hundred thirty-nine thousand, six hundred fifty".