5349562640 has 80 divisors (see below), whose sum is σ = 13156622208. Its totient is φ = 2018700288.

The previous prime is 5349562637. The next prime is 5349562717. The reversal of 5349562640 is 462659435.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 5349562591 and 5349562600.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114407 + ... + 154233.

Almost surely, 2^5349562640 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 5349562640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6578311104).

5349562640 is an abundant number, since it is smaller than the sum of its proper divisors (7807059568).

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

5349562640 is a wasteful number, since it uses less digits than its factorization.

5349562640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39936 (or 39930 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 44.

The square root of 5349562640 is about 73140.7043991237. The cubic root of 5349562640 is about 1748.9313355637.

The spelling of 5349562640 in words is "five billion, three hundred forty-nine million, five hundred sixty-two thousand, six hundred forty".