4026496587891 has 32 divisors (see below), whose sum is σ = 5542568555328. Its totient is φ = 2598420264960.

The previous prime is 4026496587857. The next prime is 4026496587901. The reversal of 4026496587891 is 1987856946204.

It is not a de Polignac number, because 4026496587891 - 2¹⁷ = 4026496456819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4026496580891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33591621 + ... + 33711273.

It is an arithmetic number, because the mean of its divisors is an integer number (173205267354).

Almost surely, 2^{4026496587891} is an apocalyptic number.

4026496587891 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

4026496587891 is a deficient number, since it is larger than the sum of its proper divisors (1516071967437).

4026496587891 is a wasteful number, since it uses less digits than its factorization.

4026496587891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121831.

The product of its (nonzero) digits is 209018880, while the sum is 69.

The spelling of 4026496587891 in words is "four trillion, twenty-six billion, four hundred ninety-six million, five hundred eighty-seven thousand, eight hundred ninety-one".