20346526051563 has 4 divisors (see below), whose sum is σ = 27128701402088. Its totient is φ = 13564350701040.

The previous prime is 20346526051561. The next prime is 20346526051571. The reversal of 20346526051563 is 36515062564302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20346526051563 - 2¹ = 20346526051561 is a prime.

It is a super-2 number, since 2×20346526051563² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20346526051561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3391087675258 + ... + 3391087675263.

It is an arithmetic number, because the mean of its divisors is an integer number (6782175350522).

Almost surely, 2^{20346526051563} is an apocalyptic number.

20346526051563 is a deficient number, since it is larger than the sum of its proper divisors (6782175350525).

20346526051563 is an equidigital number, since it uses as much as digits as its factorization.

20346526051563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6782175350524.

The product of its (nonzero) digits is 3888000, while the sum is 48.

The spelling of 20346526051563 in words is "twenty trillion, three hundred forty-six billion, five hundred twenty-six million, fifty-one thousand, five hundred sixty-three".