32315987887 has 2 divisors, whose sum is σ = 32315987888. Its totient is φ = 32315987886.

The previous prime is 32315987863. The next prime is 32315987933. The reversal of 32315987887 is 78878951323.

It is a weak prime.

It is an emirp because it is prime and its reverse (78878951323) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32315987887 is a prime.

It is a super-2 number, since 2×32315987887² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32315984887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16157993943 + 16157993944.

It is an arithmetic number, because the mean of its divisors is an integer number (16157993944).

Almost surely, 2^32315987887 is an apocalyptic number.

32315987887 is a deficient number, since it is larger than the sum of its proper divisors (1).

32315987887 is an equidigital number, since it uses as much as digits as its factorization.

32315987887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 61.

The spelling of 32315987887 in words is "thirty-two billion, three hundred fifteen million, nine hundred eighty-seven thousand, eight hundred eighty-seven".