20154552371 has 2 divisors, whose sum is σ = 20154552372. Its totient is φ = 20154552370.

The previous prime is 20154552331. The next prime is 20154552391. The reversal of 20154552371 is 17325545102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20154552371 - 2⁶ = 20154552307 is a prime.

It is not a weakly prime, because it can be changed into another prime (20154552311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10077276185 + 10077276186.

It is an arithmetic number, because the mean of its divisors is an integer number (10077276186).

Almost surely, 2^20154552371 is an apocalyptic number.

20154552371 is a deficient number, since it is larger than the sum of its proper divisors (1).

20154552371 is an equidigital number, since it uses as much as digits as its factorization.

20154552371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 20154552371 in words is "twenty billion, one hundred fifty-four million, five hundred fifty-two thousand, three hundred seventy-one".