5390438697690 has 128 divisors (see below), whose sum is σ = 13347288041472. Its totient is φ = 1392231110400.

The previous prime is 5390438697673. The next prime is 5390438697691. The reversal of 5390438697690 is 967968340935.

It is a happy number.

It is a super-2 number, since 2×5390438697690² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5390438697691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 432925965 + ... + 432938415.

It is an arithmetic number, because the mean of its divisors is an integer number (104275687824).

Almost surely, 2^{5390438697690} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5390438697690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6673644020736).

5390438697690 is an abundant number, since it is smaller than the sum of its proper divisors (7956849343782).

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

5390438697690 is a wasteful number, since it uses less digits than its factorization.

5390438697690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14244.

The product of its (nonzero) digits is 264539520, while the sum is 69.

The spelling of 5390438697690 in words is "five trillion, three hundred ninety billion, four hundred thirty-eight million, six hundred ninety-seven thousand, six hundred ninety".