20145145391051 has 2 divisors, whose sum is σ = 20145145391052. Its totient is φ = 20145145391050.

The previous prime is 20145145390967. The next prime is 20145145391101. The reversal of 20145145391051 is 15019354154102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20145145391051 - 2⁴² = 15747098879947 is a prime.

It is not a weakly prime, because it can be changed into another prime (20145145391251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072572695525 + 10072572695526.

It is an arithmetic number, because the mean of its divisors is an integer number (10072572695526).

Almost surely, 2^{20145145391051} is an apocalyptic number.

20145145391051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20145145391051 is an equidigital number, since it uses as much as digits as its factorization.

20145145391051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108000, while the sum is 41.

The spelling of 20145145391051 in words is "twenty trillion, one hundred forty-five billion, one hundred forty-five million, three hundred ninety-one thousand, fifty-one".