128470010781 has 16 divisors (see below), whose sum is σ = 195792861824. Its totient is φ = 73400546304.

The previous prime is 128470010737. The next prime is 128470010839. The reversal of 128470010781 is 187010074821.

It is not a de Polignac number, because 128470010781 - 2⁶ = 128470010717 is a prime.

It is a super-3 number, since 3×128470010781³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128470110781) 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, 307636 + ... + 592941.

It is an arithmetic number, because the mean of its divisors is an integer number (12237053864).

Almost surely, 2^128470010781 is an apocalyptic number.

It is an amenable number.

128470010781 is a deficient number, since it is larger than the sum of its proper divisors (67322851043).

128470010781 is an equidigital number, since it uses as much as digits as its factorization.

128470010781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907380.

The product of its (nonzero) digits is 25088, while the sum is 39.

The spelling of 128470010781 in words is "one hundred twenty-eight billion, four hundred seventy million, ten thousand, seven hundred eighty-one".