12890528570 has 24 divisors (see below), whose sum is σ = 23417991324. Its totient is φ = 5108859648.

The previous prime is 12890528557. The next prime is 12890528591. The reversal of 12890528570 is 7582509821.

It can be written as a sum of positive squares in 6 ways, for example, as 11692745689 + 1197782881 = 108133^2 + 34609^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64562 + ... + 173058.

Almost surely, 2^12890528570 is an apocalyptic number.

12890528570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12890528570 is a deficient number, since it is larger than the sum of its proper divisors (10527462754).

12890528570 is a wasteful number, since it uses less digits than its factorization.

12890528570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108722 (or 108613 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 47.

The spelling of 12890528570 in words is "twelve billion, eight hundred ninety million, five hundred twenty-eight thousand, five hundred seventy".