20213520412045 has 16 divisors (see below), whose sum is σ = 24270400344960. Its totient is φ = 16161366529984.

The previous prime is 20213520412039. The next prime is 20213520412051. The reversal of 20213520412045 is 54021402531202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20213520412039) and next prime (20213520412051).

It is a cyclic number.

It is not a de Polignac number, because 20213520412045 - 2³ = 20213520412037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20213520411998 and 20213520412016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 389497119 + ... + 389549011.

It is an arithmetic number, because the mean of its divisors is an integer number (1516900021560).

Almost surely, 2^{20213520412045} is an apocalyptic number.

It is an amenable number.

20213520412045 is a deficient number, since it is larger than the sum of its proper divisors (4056879932915).

20213520412045 is a wasteful number, since it uses less digits than its factorization.

20213520412045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95924.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 20213520412045 its reverse (54021402531202), we get a palindrome (74234922943247).

The spelling of 20213520412045 in words is "twenty trillion, two hundred thirteen billion, five hundred twenty million, four hundred twelve thousand, forty-five".