20612671453924 has 27 divisors (see below), whose sum is σ = 39649772964361. Its totient is φ = 9369350714240.

The previous prime is 20612671453909. The next prime is 20612671453937. The reversal of 20612671453924 is 42935417621602.

The square root of 20612671453924 is 4540118.

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

It can be written as a sum of positive squares in only one way, i.e., 15826727671524 + 4785943782400 = 3978282^2 + 2187680^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 99779412 + ... + 99985780.

Almost surely, 2^{20612671453924} is an apocalyptic number.

20612671453924 is the 4540118-th square number.

It is an amenable number.

20612671453924 is a deficient number, since it is larger than the sum of its proper divisors (19037101510437).

20612671453924 is an frugal number, since it uses more digits than its factorization.

20612671453924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412764 (or 206382 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 52.

The spelling of 20612671453924 in words is "twenty trillion, six hundred twelve billion, six hundred seventy-one million, four hundred fifty-three thousand, nine hundred twenty-four".