20837469407 has 2 divisors, whose sum is σ = 20837469408. Its totient is φ = 20837469406.

The previous prime is 20837469397. The next prime is 20837469409. The reversal of 20837469407 is 70496473802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20837469407 - 2⁶ = 20837469343 is a prime.

Together with 20837469409, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20837469409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10418734703 + 10418734704.

It is an arithmetic number, because the mean of its divisors is an integer number (10418734704).

Almost surely, 2^20837469407 is an apocalyptic number.

20837469407 is a deficient number, since it is larger than the sum of its proper divisors (1).

20837469407 is an equidigital number, since it uses as much as digits as its factorization.

20837469407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2032128, while the sum is 50.

The spelling of 20837469407 in words is "twenty billion, eight hundred thirty-seven million, four hundred sixty-nine thousand, four hundred seven".