12890507949670 has 128 divisors (see below), whose sum is σ = 26714606163840. Its totient is φ = 4436154777600.

The previous prime is 12890507949667. The next prime is 12890507949743. The reversal of 12890507949670 is 7694970509821.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12890507949596 and 12890507949605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 299904241 + ... + 299947219.

It is an arithmetic number, because the mean of its divisors is an integer number (208707860655).

Almost surely, 2^{12890507949670} is an apocalyptic number.

12890507949670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12890507949670 is an abundant number, since it is smaller than the sum of its proper divisors (13824098214170).

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

12890507949670 is a wasteful number, since it uses less digits than its factorization.

12890507949670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44330.

The product of its (nonzero) digits is 68584320, while the sum is 67.

The spelling of 12890507949670 in words is "twelve trillion, eight hundred ninety billion, five hundred seven million, nine hundred forty-nine thousand, six hundred seventy".