20125461664471 has 32 divisors (see below), whose sum is σ = 20820608103680. Its totient is φ = 19441794887424.

The previous prime is 20125461664457. The next prime is 20125461664489. The reversal of 20125461664471 is 17446616452102.

It is a cyclic number.

It is not a de Polignac number, because 20125461664471 - 2⁹ = 20125461663959 is a prime.

It is a super-3 number, since 3×20125461664471³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20125461664871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6085714000 + ... + 6085717306.

It is an arithmetic number, because the mean of its divisors is an integer number (650644003240).

Almost surely, 2^{20125461664471} is an apocalyptic number.

20125461664471 is a deficient number, since it is larger than the sum of its proper divisors (695146439209).

20125461664471 is a wasteful number, since it uses less digits than its factorization.

20125461664471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7055.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 20125461664471 in words is "twenty trillion, one hundred twenty-five billion, four hundred sixty-one million, six hundred sixty-four thousand, four hundred seventy-one".