428960336121 has 6 divisors (see below), whose sum is σ = 619609374410. Its totient is φ = 285973557408.

The previous prime is 428960336117. The next prime is 428960336183. The reversal of 428960336121 is 121633069824.

428960336121 is a `hidden beast` number, since 4 + 2 + 8 + 9 + 603 + 36 + 1 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 424238584896 + 4721751225 = 651336^2 + 68715^2 .

It is not a de Polignac number, because 428960336121 - 2² = 428960336117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428960336521) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23831129776 + ... + 23831129793.

Almost surely, 2^428960336121 is an apocalyptic number.

It is an amenable number.

428960336121 is a deficient number, since it is larger than the sum of its proper divisors (190649038289).

428960336121 is a wasteful number, since it uses less digits than its factorization.

428960336121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47662259575 (or 47662259572 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 428960336121 in words is "four hundred twenty-eight billion, nine hundred sixty million, three hundred thirty-six thousand, one hundred twenty-one".