20151083087 has 2 divisors, whose sum is σ = 20151083088. Its totient is φ = 20151083086.

The previous prime is 20151083033. The next prime is 20151083107. The reversal of 20151083087 is 78038015102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20151083087 is a prime.

It is a super-2 number, since 2×20151083087² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20151083287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10075541543 + 10075541544.

It is an arithmetic number, because the mean of its divisors is an integer number (10075541544).

Almost surely, 2^20151083087 is an apocalyptic number.

20151083087 is a deficient number, since it is larger than the sum of its proper divisors (1).

20151083087 is an equidigital number, since it uses as much as digits as its factorization.

20151083087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 35.

Adding to 20151083087 its reverse (78038015102), we get a palindrome (98189098189).

The spelling of 20151083087 in words is "twenty billion, one hundred fifty-one million, eighty-three thousand, eighty-seven".