2051683388503 has 32 divisors (see below), whose sum is σ = 2558936576000. Its totient is φ = 1605244469760.

The previous prime is 2051683388477. The next prime is 2051683388507. The reversal of 2051683388503 is 3058833861502.

It is a happy number.

It is not a de Polignac number, because 2051683388503 - 2⁵ = 2051683388471 is a prime.

It is a super-3 number, since 3×2051683388503³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051683388507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142338 + ... + 2030671.

It is an arithmetic number, because the mean of its divisors is an integer number (79966768000).

Almost surely, 2^{2051683388503} is an apocalyptic number.

2051683388503 is a deficient number, since it is larger than the sum of its proper divisors (507253187497).

2051683388503 is a wasteful number, since it uses less digits than its factorization.

2051683388503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173295.

The product of its (nonzero) digits is 4147200, while the sum is 52.

The spelling of 2051683388503 in words is "two trillion, fifty-one billion, six hundred eighty-three million, three hundred eighty-eight thousand, five hundred three".