5640234534 has 96 divisors (see below), whose sum is σ = 14602667040. Its totient is φ = 1553126400.

The previous prime is 5640234511. The next prime is 5640234557. The reversal of 5640234534 is 4354320465.

5640234534 is a `hidden beast` number, since 5 + 640 + 2 + 3 + 4 + 5 + 3 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (5640234511) and next prime (5640234557).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68724 + ... + 126504.

It is an arithmetic number, because the mean of its divisors is an integer number (152111115).

Almost surely, 2^5640234534 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5640234534, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7301333520).

5640234534 is an abundant number, since it is smaller than the sum of its proper divisors (8962432506).

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

5640234534 is a wasteful number, since it uses less digits than its factorization.

5640234534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57846 (or 57843 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

The square root of 5640234534 is about 75101.4948852551. The cubic root of 5640234534 is about 1780.0507638176.

Adding to 5640234534 its reverse (4354320465), we get a palindrome (9994554999).

The spelling of 5640234534 in words is "five billion, six hundred forty million, two hundred thirty-four thousand, five hundred thirty-four".