20687101036237 has 8 divisors (see below), whose sum is σ = 20895148044792. Its totient is φ = 20479117248000.

The previous prime is 20687101036223. The next prime is 20687101036279. The reversal of 20687101036237 is 73263010178602.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16257902987881 + 4429198048356 = 4032109^2 + 2104566^2 .

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 20687101036237 - 2¹¹ = 20687101034189 is a prime.

It is a super-2 number, since 2×20687101036237² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20687101036837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15147208 + ... + 16456369.

It is an arithmetic number, because the mean of its divisors is an integer number (2611893505599).

Almost surely, 2^{20687101036237} is an apocalyptic number.

It is an amenable number.

20687101036237 is a deficient number, since it is larger than the sum of its proper divisors (208047008555).

20687101036237 is a wasteful number, since it uses less digits than its factorization.

20687101036237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31610159.

The product of its (nonzero) digits is 508032, while the sum is 46.

The spelling of 20687101036237 in words is "twenty trillion, six hundred eighty-seven billion, one hundred one million, thirty-six thousand, two hundred thirty-seven".