20637391741 has 2 divisors, whose sum is σ = 20637391742. Its totient is φ = 20637391740.

The previous prime is 20637391699. The next prime is 20637391783. The reversal of 20637391741 is 14719373602.

It is a balanced prime because it is at equal distance from previous prime (20637391699) and next prime (20637391783).

It can be written as a sum of positive squares in only one way, i.e., 20451860100 + 185531641 = 143010^2 + 13621^2 .

It is a cyclic number.

It is not a de Polignac number, because 20637391741 - 2²⁹ = 20100520829 is a prime.

It is a super-2 number, since 2×20637391741² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20637391441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10318695870 + 10318695871.

It is an arithmetic number, because the mean of its divisors is an integer number (10318695871).

Almost surely, 2^20637391741 is an apocalyptic number.

It is an amenable number.

20637391741 is a deficient number, since it is larger than the sum of its proper divisors (1).

20637391741 is an equidigital number, since it uses as much as digits as its factorization.

20637391741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 43.

The spelling of 20637391741 in words is "twenty billion, six hundred thirty-seven million, three hundred ninety-one thousand, seven hundred forty-one".