52438351893490 has 32 divisors (see below), whose sum is σ = 97754661088560. Its totient is φ = 20229065472000.

The previous prime is 52438351893463. The next prime is 52438351893493. The reversal of 52438351893490 is 9439815383425.

It is a happy number.

It is a Cunningham number, because it is equal to 7241433²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 27497406977209 + 24940944916281 = 5243797^2 + 4994091^2 .

It is not an unprimeable number, because it can be changed into a prime (52438351893493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102367611 + ... + 102878590.

Almost surely, 2^{52438351893490} is an apocalyptic number.

52438351893490 is a deficient number, since it is larger than the sum of its proper divisors (45316309195070).

52438351893490 is a wasteful number, since it uses less digits than its factorization.

52438351893490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205247118.

The product of its (nonzero) digits is 111974400, while the sum is 64.

The spelling of 52438351893490 in words is "fifty-two trillion, four hundred thirty-eight billion, three hundred fifty-one million, eight hundred ninety-three thousand, four hundred ninety".