162970631987 has 2 divisors, whose sum is σ = 162970631988. Its totient is φ = 162970631986.

The previous prime is 162970631981. The next prime is 162970632023. The reversal of 162970631987 is 789136079261.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162970631987 is a prime.

It is not a weakly prime, because it can be changed into another prime (162970631981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81485315993 + 81485315994.

It is an arithmetic number, because the mean of its divisors is an integer number (81485315994).

Almost surely, 2^162970631987 is an apocalyptic number.

162970631987 is a deficient number, since it is larger than the sum of its proper divisors (1).

162970631987 is an equidigital number, since it uses as much as digits as its factorization.

162970631987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6858432, while the sum is 59.

The spelling of 162970631987 in words is "one hundred sixty-two billion, nine hundred seventy million, six hundred thirty-one thousand, nine hundred eighty-seven".