2921699652804 has 45 divisors (see below), whose sum is σ = 7637980451101. Its totient is φ = 973889628480.

The previous prime is 2921699652793. The next prime is 2921699652899. The reversal of 2921699652804 is 4082569961292.

The square root of 2921699652804 is 1709298.

It is a perfect power (a square), and thus also a powerful number.

2921699652804 is a `hidden beast` number, since 2 + 9 + 2 + 16 + 9 + 96 + 528 + 0 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2688294718404 + 233404934400 = 1639602^2 + 483120^2 .

It is a super-2 number, since 2×2921699652804² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 30719884 + ... + 30814844.

Almost surely, 2^{2921699652804} is an apocalyptic number.

2921699652804 is the 1709298-th square number.

It is an amenable number.

2921699652804 is an abundant number, since it is smaller than the sum of its proper divisors (4716280798297).

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

2921699652804 is an frugal number, since it uses more digits than its factorization.

2921699652804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189938 (or 94966 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 63.

The spelling of 2921699652804 in words is "two trillion, nine hundred twenty-one billion, six hundred ninety-nine million, six hundred fifty-two thousand, eight hundred four".