2005520670021 has 16 divisors (see below), whose sum is σ = 2920974539328. Its totient is φ = 1213861420800.

The previous prime is 2005520670011. The next prime is 2005520670077. The reversal of 2005520670021 is 1200760255002.

It is not a de Polignac number, because 2005520670021 - 2³⁴ = 1988340800837 is a prime.

It is a super-2 number, since 2×2005520670021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2005520670011) 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, 40115940 + ... + 40165901.

It is an arithmetic number, because the mean of its divisors is an integer number (182560908708).

Almost surely, 2^{2005520670021} is an apocalyptic number.

It is an amenable number.

2005520670021 is a deficient number, since it is larger than the sum of its proper divisors (915453869307).

2005520670021 is a wasteful number, since it uses less digits than its factorization.

2005520670021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80282612.

The product of its (nonzero) digits is 8400, while the sum is 30.

The spelling of 2005520670021 in words is "two trillion, five billion, five hundred twenty million, six hundred seventy thousand, twenty-one".