4815040082421 has 4 divisors (see below), whose sum is σ = 6420053443232. Its totient is φ = 3210026721612.

The previous prime is 4815040082401. The next prime is 4815040082443. The reversal of 4815040082421 is 1242800405184.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4815040082421 - 2¹⁵ = 4815040049653 is a prime.

It is a super-2 number, since 2×4815040082421² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4815040082421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4815040082401) 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, 802506680401 + ... + 802506680406.

It is an arithmetic number, because the mean of its divisors is an integer number (1605013360808).

Almost surely, 2^{4815040082421} is an apocalyptic number.

It is an amenable number.

4815040082421 is a deficient number, since it is larger than the sum of its proper divisors (1605013360811).

4815040082421 is a wasteful number, since it uses less digits than its factorization.

4815040082421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605013360810.

The product of its (nonzero) digits is 81920, while the sum is 39.

The spelling of 4815040082421 in words is "four trillion, eight hundred fifteen billion, forty million, eighty-two thousand, four hundred twenty-one".