128562862461 has 16 divisors (see below), whose sum is σ = 187087165248. Its totient is φ = 77880787200.

The previous prime is 128562862451. The next prime is 128562862469. The reversal of 128562862461 is 164268265821.

It is a happy number.

It is not a de Polignac number, because 128562862461 - 2¹⁹ = 128562338173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128562862469) 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, 830086 + ... + 972711.

It is an arithmetic number, because the mean of its divisors is an integer number (11692947828).

Almost surely, 2^128562862461 is an apocalyptic number.

128562862461 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

128562862461 is a deficient number, since it is larger than the sum of its proper divisors (58524302787).

128562862461 is a wasteful number, since it uses less digits than its factorization.

128562862461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804972.

The product of its digits is 2211840, while the sum is 51.

The spelling of 128562862461 in words is "one hundred twenty-eight billion, five hundred sixty-two million, eight hundred sixty-two thousand, four hundred sixty-one".