20455396460 has 48 divisors (see below), whose sum is σ = 43293852000. Its totient is φ = 8117996544.

The previous prime is 20455396459. The next prime is 20455396501. The reversal of 20455396460 is 6469355402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3003419 + ... + 3010221.

It is an arithmetic number, because the mean of its divisors is an integer number (901955250).

Almost surely, 2^20455396460 is an apocalyptic number.

20455396460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20455396460 is an abundant number, since it is smaller than the sum of its proper divisors (22838455540).

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

20455396460 is a wasteful number, since it uses less digits than its factorization.

20455396460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7970 (or 7968 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 20455396460 in words is "twenty billion, four hundred fifty-five million, three hundred ninety-six thousand, four hundred sixty".