5451333138 has 24 divisors (see below), whose sum is σ = 11822696028. Its totient is φ = 1815345792.

The previous prime is 5451333133. The next prime is 5451333157. The reversal of 5451333138 is 8313331545.

5451333138 is a `hidden beast` number, since 5 + 4 + 513 + 3 + 3 + 138 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5345510769 + 105822369 = 73113^2 + 10287^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5451333133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127995 + ... + 165182.

Almost surely, 2^5451333138 is an apocalyptic number.

5451333138 is an abundant number, since it is smaller than the sum of its proper divisors (6371362890).

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

5451333138 is a wasteful number, since it uses less digits than its factorization.

5451333138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294218 (or 294215 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 5451333138 is about 73833.1438989293. The cubic root of 5451333138 is about 1759.9523422443.

The spelling of 5451333138 in words is "five billion, four hundred fifty-one million, three hundred thirty-three thousand, one hundred thirty-eight".