20084689690 has 32 divisors (see below), whose sum is σ = 39191273856. Its totient is φ = 7366766400.

The previous prime is 20084689673. The next prime is 20084689693. The reversal of 20084689690 is 9698648002.

It is a super-2 number, since 2×20084689690² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20084689693) 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, 491952 + ... + 531211.

It is an arithmetic number, because the mean of its divisors is an integer number (1224727308).

Almost surely, 2^20084689690 is an apocalyptic number.

20084689690 is a deficient number, since it is larger than the sum of its proper divisors (19106584166).

20084689690 is a wasteful number, since it uses less digits than its factorization.

20084689690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023334.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 20084689690 in words is "twenty billion, eighty-four million, six hundred eighty-nine thousand, six hundred ninety".