5266456440 has 128 divisors (see below), whose sum is σ = 18071424000. Its totient is φ = 1202761728.

The previous prime is 5266456397. The next prime is 5266456451. The reversal of 5266456440 is 446546625.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 5266456392 and 5266456401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1585101 + ... + 1588419.

It is an arithmetic number, because the mean of its divisors is an integer number (141183000).

Almost surely, 2^5266456440 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 5266456440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9035712000).

5266456440 is an abundant number, since it is smaller than the sum of its proper divisors (12804967560).

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

5266456440 is a wasteful number, since it uses less digits than its factorization.

5266456440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5229 (or 5225 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The square root of 5266456440 is about 72570.3551045466. The cubic root of 5266456440 is about 1739.8273973326.

The spelling of 5266456440 in words is "five billion, two hundred sixty-six million, four hundred fifty-six thousand, four hundred forty".