20455366446 has 48 divisors (see below), whose sum is σ = 47065533840. Its totient is φ = 6402412800.

The previous prime is 20455366439. The next prime is 20455366469. The reversal of 20455366446 is 64466355402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 226005 + ... + 303296.

It is an arithmetic number, because the mean of its divisors is an integer number (980531955).

Almost surely, 2^20455366446 is an apocalyptic number.

20455366446 is an abundant number, since it is smaller than the sum of its proper divisors (26610167394).

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

20455366446 is a wasteful number, since it uses less digits than its factorization.

20455366446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529441 (or 529438 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 45.

The spelling of 20455366446 in words is "twenty billion, four hundred fifty-five million, three hundred sixty-six thousand, four hundred forty-six".