20340554501 has 2 divisors, whose sum is σ = 20340554502. Its totient is φ = 20340554500.

The previous prime is 20340554497. The next prime is 20340554503. The reversal of 20340554501 is 10545504302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13070434276 + 7270120225 = 114326^2 + 85265^2 .

It is a cyclic number.

It is not a de Polignac number, because 20340554501 - 2² = 20340554497 is a prime.

Together with 20340554503, 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 (20340554503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10170277250 + 10170277251.

It is an arithmetic number, because the mean of its divisors is an integer number (10170277251).

Almost surely, 2^20340554501 is an apocalyptic number.

It is an amenable number.

20340554501 is a deficient number, since it is larger than the sum of its proper divisors (1).

20340554501 is an equidigital number, since it uses as much as digits as its factorization.

20340554501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 20340554501 in words is "twenty billion, three hundred forty million, five hundred fifty-four thousand, five hundred one".