1690425277728 has 96 divisors (see below), whose sum is σ = 4848110910720. Its totient is φ = 511472559360.

The previous prime is 1690425277727. The next prime is 1690425277747. The reversal of 1690425277728 is 8277725240961.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1690425277727) 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, 518650 + ... + 1910457.

It is an arithmetic number, because the mean of its divisors is an integer number (50501155320).

Almost surely, 2^{1690425277728} is an apocalyptic number.

It is an amenable number.

1690425277728 is an abundant number, since it is smaller than the sum of its proper divisors (3157685632992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1690425277728 is a wasteful number, since it uses less digits than its factorization.

1690425277728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429790 (or 2429782 counting only the distinct ones).

The product of its (nonzero) digits is 23708160, while the sum is 60.

The spelling of 1690425277728 in words is "one trillion, six hundred ninety billion, four hundred twenty-five million, two hundred seventy-seven thousand, seven hundred twenty-eight".