428641133621919 has 32 divisors (see below), whose sum is σ = 584146851095808. Its totient is φ = 279516535680000.

The previous prime is 428641133621881. The next prime is 428641133621971. The reversal of 428641133621919 is 919126331146824.

It is not a de Polignac number, because 428641133621919 - 2²⁰ = 428641132573343 is a prime.

It is a super-2 number, since 2×428641133621919² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428641133620919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1348104079 + ... + 1348421999.

It is an arithmetic number, because the mean of its divisors is an integer number (18254589096744).

Almost surely, 2^{428641133621919} is an apocalyptic number.

428641133621919 is a deficient number, since it is larger than the sum of its proper divisors (155505717473889).

428641133621919 is a wasteful number, since it uses less digits than its factorization.

428641133621919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371719.

The product of its digits is 13436928, while the sum is 60.

The spelling of 428641133621919 in words is "four hundred twenty-eight trillion, six hundred forty-one billion, one hundred thirty-three million, six hundred twenty-one thousand, nine hundred nineteen".