428861138355 has 40 divisors (see below), whose sum is σ = 827909717712. Its totient is φ = 211131634752.

The previous prime is 428861138351. The next prime is 428861138399. The reversal of 428861138355 is 553831168824.

428861138355 is a `hidden beast` number, since 4 + 288 + 6 + 1 + 1 + 3 + 8 + 355 = 666.

It is not a de Polignac number, because 428861138355 - 2² = 428861138351 is a prime.

It is a super-2 number, since 2×428861138355² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428861138351) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 40722289 + ... + 40732818.

Almost surely, 2^428861138355 is an apocalyptic number.

428861138355 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

428861138355 is a deficient number, since it is larger than the sum of its proper divisors (399048579357).

428861138355 is a wasteful number, since it uses less digits than its factorization.

428861138355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81455137 (or 81455128 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 428861138355 in words is "four hundred twenty-eight billion, eight hundred sixty-one million, one hundred thirty-eight thousand, three hundred fifty-five".