4263421615 has 4 divisors (see below), whose sum is σ = 5116105944. Its totient is φ = 3410737288.

The previous prime is 4263421553. The next prime is 4263421627. The reversal of 4263421615 is 5161243624.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4263421615 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426342157 + ... + 426342166.

It is an arithmetic number, because the mean of its divisors is an integer number (1279026486).

Almost surely, 2^4263421615 is an apocalyptic number.

4263421615 is a deficient number, since it is larger than the sum of its proper divisors (852684329).

4263421615 is an equidigital number, since it uses as much as digits as its factorization.

4263421615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852684328.

The product of its digits is 34560, while the sum is 34.

The square root of 4263421615 is about 65294.8819969835. The cubic root of 4263421615 is about 1621.5092391202.

The spelling of 4263421615 in words is "four billion, two hundred sixty-three million, four hundred twenty-one thousand, six hundred fifteen".