20462844655 has 16 divisors (see below), whose sum is σ = 26806598784. Its totient is φ = 14871582880.

The previous prime is 20462844643. The next prime is 20462844671. The reversal of 20462844655 is 55644826402.

It is a de Polignac number, because none of the positive numbers 2^k-20462844655 is a prime.

It is a super-2 number, since 2×20462844655² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

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, 51877 + ... + 208846.

It is an arithmetic number, because the mean of its divisors is an integer number (1675412424).

Almost surely, 2^20462844655 is an apocalyptic number.

20462844655 is a deficient number, since it is larger than the sum of its proper divisors (6343754129).

20462844655 is a wasteful number, since it uses less digits than its factorization.

20462844655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262166.

The product of its (nonzero) digits is 1843200, while the sum is 46.

The spelling of 20462844655 in words is "twenty billion, four hundred sixty-two million, eight hundred forty-four thousand, six hundred fifty-five".