20312354163737 has 4 divisors (see below), whose sum is σ = 20330769717120. Its totient is φ = 20293938610356.

The previous prime is 20312354163713. The next prime is 20312354163793. The reversal of 20312354163737 is 73736145321302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20312354163737 - 2¹² = 20312354159641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20312354163691 and 20312354163700.

It is not an unprimeable number, because it can be changed into a prime (20312354163137) 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, 9207775037 + ... + 9207777242.

It is an arithmetic number, because the mean of its divisors is an integer number (5082692429280).

Almost surely, 2^{20312354163737} is an apocalyptic number.

It is an amenable number.

20312354163737 is a deficient number, since it is larger than the sum of its proper divisors (18415553383).

20312354163737 is a wasteful number, since it uses less digits than its factorization.

20312354163737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18415553382.

The product of its (nonzero) digits is 1905120, while the sum is 47.

The spelling of 20312354163737 in words is "twenty trillion, three hundred twelve billion, three hundred fifty-four million, one hundred sixty-three thousand, seven hundred thirty-seven".