4040451555421 has 4 divisors (see below), whose sum is σ = 4040479871200. Its totient is φ = 4040423239644.

The previous prime is 4040451555409. The next prime is 4040451555449. The reversal of 4040451555421 is 1245551540404.

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 a cyclic number.

It is not a de Polignac number, because 4040451555421 - 2⁵ = 4040451555389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4040451555401) 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, 13942761 + ... + 14229598.

It is an arithmetic number, because the mean of its divisors is an integer number (1010119967800).

Almost surely, 2^{4040451555421} is an apocalyptic number.

It is an amenable number.

4040451555421 is a deficient number, since it is larger than the sum of its proper divisors (28315779).

4040451555421 is a wasteful number, since it uses less digits than its factorization.

4040451555421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28315778.

The product of its (nonzero) digits is 320000, while the sum is 40.

The spelling of 4040451555421 in words is "four trillion, forty billion, four hundred fifty-one million, five hundred fifty-five thousand, four hundred twenty-one".