7421357663 has 4 divisors (see below), whose sum is σ = 7431680160. Its totient is φ = 7411035168.

The previous prime is 7421357651. The next prime is 7421357677. The reversal of 7421357663 is 3667531247.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7421357663 - 2¹⁸ = 7421095519 is a prime.

It is a super-3 number, since 3×7421357663³ (a number of 31 digits) contains 333 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 (7421357693) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5160170 + ... + 5161607.

It is an arithmetic number, because the mean of its divisors is an integer number (1857920040).

Almost surely, 2^7421357663 is an apocalyptic number.

7421357663 is a deficient number, since it is larger than the sum of its proper divisors (10322497).

7421357663 is a wasteful number, since it uses less digits than its factorization.

7421357663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10322496.

The product of its digits is 635040, while the sum is 44.

The square root of 7421357663 is about 86147.3021225854. The cubic root of 7421357663 is about 1950.5681152488.

The spelling of 7421357663 in words is "seven billion, four hundred twenty-one million, three hundred fifty-seven thousand, six hundred sixty-three".