146987107487989 has 2 divisors, whose sum is σ = 146987107487990. Its totient is φ = 146987107487988.

The previous prime is 146987107487951. The next prime is 146987107488061. The reversal of 146987107487989 is 989784701789641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146689837187364 + 297270300625 = 12111558^2 + 545225^2 .

It is a cyclic number.

It is not a de Polignac number, because 146987107487989 - 2²³ = 146987099099381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (146987107482989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73493553743994 + 73493553743995.

It is an arithmetic number, because the mean of its divisors is an integer number (73493553743995).

Almost surely, 2^{146987107487989} is an apocalyptic number.

It is an amenable number.

146987107487989 is a deficient number, since it is larger than the sum of its proper divisors (1).

146987107487989 is an equidigital number, since it uses as much as digits as its factorization.

146987107487989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12290310144, while the sum is 88.

The spelling of 146987107487989 in words is "one hundred forty-six trillion, nine hundred eighty-seven billion, one hundred seven million, four hundred eighty-seven thousand, nine hundred eighty-nine".