5427512640 has 672 divisors, whose sum is σ = 21910487040. Its totient is φ = 1219276800.

The previous prime is 5427512627. The next prime is 5427512681. The reversal of 5427512640 is 462157245.

It is a happy number.

5427512640 is a `hidden beast` number, since 5 + 4 + 2 + 7 + 5 + 1 + 2 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 5427512595 and 5427512604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 42736257 + ... + 42736383.

Almost surely, 2^5427512640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5427512640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10955243520).

5427512640 is an abundant number, since it is smaller than the sum of its proper divisors (16482974400).

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

5427512640 is a wasteful number, since it uses less digits than its factorization.

5427512640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 5427512640 is about 73671.6542504646. The cubic root of 5427512640 is about 1757.3851321130.

Adding to 5427512640 its reverse (462157245), we get a palindrome (5889669885).

The spelling of 5427512640 in words is "five billion, four hundred twenty-seven million, five hundred twelve thousand, six hundred forty".