20311140642619 has 2 divisors, whose sum is σ = 20311140642620. Its totient is φ = 20311140642618.

The previous prime is 20311140642613. The next prime is 20311140642691. The reversal of 20311140642619 is 91624604111302.

Together with next prime (20311140642691) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20311140642619 - 2²⁵ = 20311107088187 is a prime.

It is a super-2 number, since 2×20311140642619² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20311140642613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10155570321309 + 10155570321310.

It is an arithmetic number, because the mean of its divisors is an integer number (10155570321310).

Almost surely, 2^{20311140642619} is an apocalyptic number.

20311140642619 is a deficient number, since it is larger than the sum of its proper divisors (1).

20311140642619 is an equidigital number, since it uses as much as digits as its factorization.

20311140642619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 20311140642619 in words is "twenty trillion, three hundred eleven billion, one hundred forty million, six hundred forty-two thousand, six hundred nineteen".