8421795501 has 16 divisors (see below), whose sum is σ = 12837138048. Its totient is φ = 4810982400.

The previous prime is 8421795493. The next prime is 8421795509. The reversal of 8421795501 is 1055971248.

It is an interprime number because it is at equal distance from previous prime (8421795493) and next prime (8421795509).

It is not a de Polignac number, because 8421795501 - 2³ = 8421795493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421795509) 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, 10921 + ... + 130241.

It is an arithmetic number, because the mean of its divisors is an integer number (802321128).

Almost surely, 2^8421795501 is an apocalyptic number.

It is an amenable number.

8421795501 is a deficient number, since it is larger than the sum of its proper divisors (4415342547).

8421795501 is a wasteful number, since it uses less digits than its factorization.

8421795501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122692.

The product of its (nonzero) digits is 100800, while the sum is 42.

The square root of 8421795501 is about 91770.3410748811. The cubic root of 8421795501 is about 2034.5493592923.

The spelling of 8421795501 in words is "eight billion, four hundred twenty-one million, seven hundred ninety-five thousand, five hundred one".