20520034627765 has 8 divisors (see below), whose sum is σ = 24628472762040. Its totient is φ = 16413073563072.

The previous prime is 20520034627759. The next prime is 20520034627787. The reversal of 20520034627765 is 56772643002502.

It can be written as a sum of positive squares in 4 ways, for example, as 8010111285796 + 12509923341969 = 2830214^2 + 3536937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20520034627765 - 2⁵ = 20520034627733 is a prime.

It is a super-2 number, since 2×20520034627765² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369236830 + ... + 369292399.

It is an arithmetic number, because the mean of its divisors is an integer number (3078559095255).

Almost surely, 2^{20520034627765} is an apocalyptic number.

It is an amenable number.

20520034627765 is a deficient number, since it is larger than the sum of its proper divisors (4108438134275).

20520034627765 is an equidigital number, since it uses as much as digits as its factorization.

20520034627765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738534791.

The product of its (nonzero) digits is 4233600, while the sum is 49.

The spelling of 20520034627765 in words is "twenty trillion, five hundred twenty billion, thirty-four million, six hundred twenty-seven thousand, seven hundred sixty-five".