28131643107570 has 32 divisors (see below), whose sum is σ = 69162673789440. Its totient is φ = 7318801458560.

The previous prime is 28131643107539. The next prime is 28131643107587. The reversal of 28131643107570 is 7570134613182.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11435626050 + ... + 11435628509.

It is an arithmetic number, because the mean of its divisors is an integer number (2161333555920).

Almost surely, 2^{28131643107570} is an apocalyptic number.

28131643107570 is an abundant number, since it is smaller than the sum of its proper divisors (41031030681870).

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

28131643107570 is a wasteful number, since it uses less digits than its factorization.

28131643107570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22871254610.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 28131643107570 in words is "twenty-eight trillion, one hundred thirty-one billion, six hundred forty-three million, one hundred seven thousand, five hundred seventy".