20707541137 has 2 divisors, whose sum is σ = 20707541138. Its totient is φ = 20707541136.

The previous prime is 20707541093. The next prime is 20707541143. The reversal of 20707541137 is 73114570702.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15938810001 + 4768731136 = 126249^2 + 69056^2 .

It is a cyclic number.

It is not a de Polignac number, because 20707541137 - 2¹⁹ = 20707016849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20707541096 and 20707541105.

It is not a weakly prime, because it can be changed into another prime (20707548137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10353770568 + 10353770569.

It is an arithmetic number, because the mean of its divisors is an integer number (10353770569).

Almost surely, 2^20707541137 is an apocalyptic number.

It is an amenable number.

20707541137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20707541137 is an equidigital number, since it uses as much as digits as its factorization.

20707541137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41160, while the sum is 37.

The spelling of 20707541137 in words is "twenty billion, seven hundred seven million, five hundred forty-one thousand, one hundred thirty-seven".