20406276817104 has 40 divisors (see below), whose sum is σ = 52716873663072. Its totient is φ = 6802007297920.

The previous prime is 20406276817103. The next prime is 20406276817123. The reversal of 20406276817104 is 40171867260402.

It is a super-2 number, since 2×20406276817104² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20406276817103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1287259 + ... + 6516869.

Almost surely, 2^{20406276817104} is an apocalyptic number.

20406276817104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20406276817104 is an abundant number, since it is smaller than the sum of its proper divisors (32310596845968).

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

20406276817104 is a wasteful number, since it uses less digits than its factorization.

20406276817104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5310915 (or 5310909 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 20406276817104 in words is "twenty trillion, four hundred six billion, two hundred seventy-six million, eight hundred seventeen thousand, one hundred four".