12870890138950 has 24 divisors (see below), whose sum is σ = 23939951807520. Its totient is φ = 5148335378400.

The previous prime is 12870890138933. The next prime is 12870890138963. The reversal of 12870890138950 is 5983109807821.

It is a congruent number.

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, 20589091 + ... + 21205009.

It is an arithmetic number, because the mean of its divisors is an integer number (997497991980).

Almost surely, 2^{12870890138950} is an apocalyptic number.

12870890138950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12870890138950 is a deficient number, since it is larger than the sum of its proper divisors (11069061668570).

12870890138950 is a wasteful number, since it uses less digits than its factorization.

12870890138950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033872 (or 1033867 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 61.

The spelling of 12870890138950 in words is "twelve trillion, eight hundred seventy billion, eight hundred ninety million, one hundred thirty-eight thousand, nine hundred fifty".