2051356452069 has 16 divisors (see below), whose sum is σ = 2757796113600. Its totient is φ = 1356284846976.

The previous prime is 2051356452059. The next prime is 2051356452097. The reversal of 2051356452069 is 9602546531502.

It is a happy number.

It is not a de Polignac number, because 2051356452069 - 2⁴ = 2051356452053 is a prime.

It is a super-2 number, since 2×2051356452069² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051356452059) 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, 4920384 + ... + 5320985.

It is an arithmetic number, because the mean of its divisors is an integer number (172362257100).

Almost surely, 2^{2051356452069} is an apocalyptic number.

It is an amenable number.

2051356452069 is a deficient number, since it is larger than the sum of its proper divisors (706439661531).

2051356452069 is a wasteful number, since it uses less digits than its factorization.

2051356452069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10241924.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 2051356452069 in words is "two trillion, fifty-one billion, three hundred fifty-six million, four hundred fifty-two thousand, sixty-nine".