20654079944976 has 75 divisors (see below), whose sum is σ = 59779373127573. Its totient is φ = 6884638778880.

The previous prime is 20654079944929. The next prime is 20654079944977. The reversal of 20654079944976 is 67944997045602.

It is a happy number.

The square root of 20654079944976 is 4544676.

It is a perfect power (a square), and thus also a powerful number.

20654079944976 is a `hidden beast` number, since 2 + 0 + 6 + 5 + 40 + 7 + 9 + 94 + 497 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1123337135376 + 19530742809600 = 1059876^2 + 4419360^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (20654079944977) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 163545216 + ... + 163671456.

Almost surely, 2^{20654079944976} is an apocalyptic number.

20654079944976 is the 4544676-th square number.

It is an amenable number.

20654079944976 is an abundant number, since it is smaller than the sum of its proper divisors (39125293182597).

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

20654079944976 is an frugal number, since it uses more digits than its factorization.

20654079944976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252502 (or 126246 counting only the distinct ones).

The product of its (nonzero) digits is 823011840, while the sum is 72.

The spelling of 20654079944976 in words is "twenty trillion, six hundred fifty-four billion, seventy-nine million, nine hundred forty-four thousand, nine hundred seventy-six".