5321778631 has 8 divisors (see below), whose sum is σ = 5750710560. Its totient is φ = 4895641632.

The previous prime is 5321778607. The next prime is 5321778667. The reversal of 5321778631 is 1368771235.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5321778631 - 2¹⁷ = 5321647559 is a prime.

It is a super-2 number, since 2×5321778631² = 56642655594736468322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5321778031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694771 + ... + 702388.

It is an arithmetic number, because the mean of its divisors is an integer number (718838820).

Almost surely, 2^5321778631 is an apocalyptic number.

5321778631 is a deficient number, since it is larger than the sum of its proper divisors (428931929).

5321778631 is a wasteful number, since it uses less digits than its factorization.

5321778631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397465.

The product of its digits is 211680, while the sum is 43.

The square root of 5321778631 is about 72950.5218007383. The cubic root of 5321778631 is about 1745.8982719018.

The spelling of 5321778631 in words is "five billion, three hundred twenty-one million, seven hundred seventy-eight thousand, six hundred thirty-one".