20455655402 has 16 divisors (see below), whose sum is σ = 37764287232. Its totient is φ = 8092347120.

The previous prime is 20455655377. The next prime is 20455655411.

It is a happy number.

20455655402 is nontrivially palindromic in base 10.

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, 56196674 + ... + 56197037.

It is an arithmetic number, because the mean of its divisors is an integer number (2360267952).

Almost surely, 2^20455655402 is an apocalyptic number.

20455655402 is a deficient number, since it is larger than the sum of its proper divisors (17308631830).

20455655402 is a wasteful number, since it uses less digits than its factorization.

20455655402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112393733.

The product of its (nonzero) digits is 240000, while the sum is 38.

The spelling of 20455655402 in words is "twenty billion, four hundred fifty-five million, six hundred fifty-five thousand, four hundred two".