20211664602 has 16 divisors (see below), whose sum is σ = 40425561792. Its totient is φ = 6736849440.

The previous prime is 20211664567. The next prime is 20211664619. The reversal of 20211664602 is 20646611202.

It is a super-2 number, since 2×20211664602² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20211664602.

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, 39102 + ... + 204822.

It is an arithmetic number, because the mean of its divisors is an integer number (2526597612).

Almost surely, 2^20211664602 is an apocalyptic number.

20211664602 is an abundant number, since it is smaller than the sum of its proper divisors (20213897190).

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

20211664602 is a wasteful number, since it uses less digits than its factorization.

20211664602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186053.

The product of its (nonzero) digits is 6912, while the sum is 30.

The spelling of 20211664602 in words is "twenty billion, two hundred eleven million, six hundred sixty-four thousand, six hundred two".