20140151987 has 2 divisors, whose sum is σ = 20140151988. Its totient is φ = 20140151986.

The previous prime is 20140151953. The next prime is 20140152041. The reversal of 20140151987 is 78915104102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20140151987 - 2¹⁸ = 20139889843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20140151987.

It is not a weakly prime, because it can be changed into another prime (20140151287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10070075993 + 10070075994.

It is an arithmetic number, because the mean of its divisors is an integer number (10070075994).

Almost surely, 2^20140151987 is an apocalyptic number.

20140151987 is a deficient number, since it is larger than the sum of its proper divisors (1).

20140151987 is an equidigital number, since it uses as much as digits as its factorization.

20140151987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 38.

The spelling of 20140151987 in words is "twenty billion, one hundred forty million, one hundred fifty-one thousand, nine hundred eighty-seven".