20011969151 has 2 divisors, whose sum is σ = 20011969152. Its totient is φ = 20011969150.

The previous prime is 20011969111. The next prime is 20011969157. The reversal of 20011969151 is 15196911002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20011969151 - 2²² = 20007774847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011969157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005984575 + 10005984576.

It is an arithmetic number, because the mean of its divisors is an integer number (10005984576).

Almost surely, 2^20011969151 is an apocalyptic number.

20011969151 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011969151 is an equidigital number, since it uses as much as digits as its factorization.

20011969151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 35.

The spelling of 20011969151 in words is "twenty billion, eleven million, nine hundred sixty-nine thousand, one hundred fifty-one".