4032639487421 has 16 divisors (see below), whose sum is σ = 4381902524160. Its totient is φ = 3699632428800.

The previous prime is 4032639487403. The next prime is 4032639487441. The reversal of 4032639487421 is 1247849362304.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4032639487421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4032639487441) 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, 19918940 + ... + 20120373.

It is an arithmetic number, because the mean of its divisors is an integer number (273868907760).

Almost surely, 2^{4032639487421} is an apocalyptic number.

It is an amenable number.

4032639487421 is a deficient number, since it is larger than the sum of its proper divisors (349263036739).

4032639487421 is a wasteful number, since it uses less digits than its factorization.

4032639487421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40039516.

The product of its (nonzero) digits is 6967296, while the sum is 53.

The spelling of 4032639487421 in words is "four trillion, thirty-two billion, six hundred thirty-nine million, four hundred eighty-seven thousand, four hundred twenty-one".