1287970770338 has 18 divisors (see below), whose sum is σ = 2247397172433. Its totient is φ = 551982658080.

The previous prime is 1287970770319. The next prime is 1287970770353. The reversal of 1287970770338 is 8330770797821.

It can be written as a sum of positive squares in 2 ways, for example, as 1169354588689 + 118616181649 = 1081367^2 + 344407^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=802487.

It is a super-2 number, since 2×1287970770338² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 11177498 + ... + 11292138.

Almost surely, 2^{1287970770338} is an apocalyptic number.

1287970770338 is a deficient number, since it is larger than the sum of its proper divisors (959426402095).

1287970770338 is an frugal number, since it uses more digits than its factorization.

1287970770338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229298 (or 114650 counting only the distinct ones).

The product of its (nonzero) digits is 24893568, while the sum is 62.

The spelling of 1287970770338 in words is "one trillion, two hundred eighty-seven billion, nine hundred seventy million, seven hundred seventy thousand, three hundred thirty-eight".