20061619087 has 2 divisors, whose sum is σ = 20061619088. Its totient is φ = 20061619086.

The previous prime is 20061619079. The next prime is 20061619121. The reversal of 20061619087 is 78091616002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20061619087 - 2³ = 20061619079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20061619057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10030809543 + 10030809544.

It is an arithmetic number, because the mean of its divisors is an integer number (10030809544).

Almost surely, 2^20061619087 is an apocalyptic number.

20061619087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20061619087 is an equidigital number, since it uses as much as digits as its factorization.

20061619087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 40.

The spelling of 20061619087 in words is "twenty billion, sixty-one million, six hundred nineteen thousand, eighty-seven".