1230871513566 has 32 divisors (see below), whose sum is σ = 2509947142560. Its totient is φ = 402267325824.

The previous prime is 1230871513499. The next prime is 1230871513567. The reversal of 1230871513566 is 6653151780321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230871513567) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 899905 + ... + 1808748.

It is an arithmetic number, because the mean of its divisors is an integer number (78435848205).

Almost surely, 2^{1230871513566} is an apocalyptic number.

1230871513566 is an abundant number, since it is smaller than the sum of its proper divisors (1279075628994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1230871513566 is a wasteful number, since it uses less digits than its factorization.

1230871513566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2710140.

The product of its (nonzero) digits is 907200, while the sum is 48.

The spelling of 1230871513566 in words is "one trillion, two hundred thirty billion, eight hundred seventy-one million, five hundred thirteen thousand, five hundred sixty-six".