428100961281 has 16 divisors (see below), whose sum is σ = 660203894784. Its totient is φ = 241681780944.

The previous prime is 428100961273. The next prime is 428100961289. The reversal of 428100961281 is 182169001824.

It is an interprime number because it is at equal distance from previous prime (428100961273) and next prime (428100961289).

It is not a de Polignac number, because 428100961281 - 2³ = 428100961273 is a prime.

It is a super-2 number, since 2×428100961281² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428100961289) 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, 122804041 + ... + 122807526.

It is an arithmetic number, because the mean of its divisors is an integer number (41262743424).

Almost surely, 2^428100961281 is an apocalyptic number.

It is an amenable number.

428100961281 is a deficient number, since it is larger than the sum of its proper divisors (232102933503).

428100961281 is a wasteful number, since it uses less digits than its factorization.

428100961281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245611660.

The product of its (nonzero) digits is 55296, while the sum is 42.

The spelling of 428100961281 in words is "four hundred twenty-eight billion, one hundred million, nine hundred sixty-one thousand, two hundred eighty-one".