428961311690 has 16 divisors (see below), whose sum is σ = 772296959592. Its totient is φ = 171547502784.

The previous prime is 428961311671. The next prime is 428961311741. The reversal of 428961311690 is 96113169824.

It can be written as a sum of positive squares in 4 ways, for example, as 239632767529 + 189328544161 = 489523^2 + 435119^2 .

It is a super-2 number, since 2×428961311690² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4579049 + ... + 4671788.

Almost surely, 2^428961311690 is an apocalyptic number.

428961311690 is a deficient number, since it is larger than the sum of its proper divisors (343335647902).

428961311690 is a wasteful number, since it uses less digits than its factorization.

428961311690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9255481.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 428961311690 in words is "four hundred twenty-eight billion, nine hundred sixty-one million, three hundred eleven thousand, six hundred ninety".