20003506776121 has 16 divisors (see below), whose sum is σ = 21957871117248. Its totient is φ = 18071806579200.

The previous prime is 20003506776119. The next prime is 20003506776151. The reversal of 20003506776121 is 12167760530002.

It is not a de Polignac number, because 20003506776121 - 2¹ = 20003506776119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20003506776151) 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, 19541281 + ... + 20539441.

It is an arithmetic number, because the mean of its divisors is an integer number (1372366944828).

Almost surely, 2^{20003506776121} is an apocalyptic number.

It is an amenable number.

20003506776121 is a deficient number, since it is larger than the sum of its proper divisors (1954364341127).

20003506776121 is a wasteful number, since it uses less digits than its factorization.

20003506776121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009512.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 20003506776121 in words is "twenty trillion, three billion, five hundred six million, seven hundred seventy-six thousand, one hundred twenty-one".