2059956455581 has 4 divisors (see below), whose sum is σ = 2068163453664. Its totient is φ = 2051749457500.

The previous prime is 2059956455551. The next prime is 2059956455597. The reversal of 2059956455581 is 1855546599502.

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 2059956455581 - 2⁵ = 2059956455549 is a prime.

It is a super-2 number, since 2×2059956455581² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2059956455521) 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, 4103498665 + ... + 4103499166.

It is an arithmetic number, because the mean of its divisors is an integer number (517040863416).

Almost surely, 2^{2059956455581} is an apocalyptic number.

It is an amenable number.

2059956455581 is a deficient number, since it is larger than the sum of its proper divisors (8206998083).

2059956455581 is an equidigital number, since it uses as much as digits as its factorization.

2059956455581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8206998082.

The product of its (nonzero) digits is 97200000, while the sum is 64.

The spelling of 2059956455581 in words is "two trillion, fifty-nine billion, nine hundred fifty-six million, four hundred fifty-five thousand, five hundred eighty-one".