20702740046407 has 2 divisors, whose sum is σ = 20702740046408. Its totient is φ = 20702740046406.

The previous prime is 20702740046381. The next prime is 20702740046413. The reversal of 20702740046407 is 70464004720702.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20702740046407 - 2⁷ = 20702740046279 is a prime.

It is a super-2 number, since 2×20702740046407² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20702740046447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10351370023203 + 10351370023204.

It is an arithmetic number, because the mean of its divisors is an integer number (10351370023204).

Almost surely, 2^{20702740046407} is an apocalyptic number.

20702740046407 is a deficient number, since it is larger than the sum of its proper divisors (1).

20702740046407 is an equidigital number, since it uses as much as digits as its factorization.

20702740046407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 526848, while the sum is 43.

The spelling of 20702740046407 in words is "twenty trillion, seven hundred two billion, seven hundred forty million, forty-six thousand, four hundred seven".