20120417707457 has 8 divisors (see below), whose sum is σ = 20450570186880. Its totient is φ = 19790275214160.

The previous prime is 20120417707451. The next prime is 20120417707459. The reversal of 20120417707457 is 75470771402102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20120417707457 - 2²² = 20120413513153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120417707451) 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, 1621478 + ... + 6547520.

It is an arithmetic number, because the mean of its divisors is an integer number (2556321273360).

Almost surely, 2^{20120417707457} is an apocalyptic number.

It is an amenable number.

20120417707457 is a deficient number, since it is larger than the sum of its proper divisors (330152479423).

20120417707457 is an equidigital number, since it uses as much as digits as its factorization.

20120417707457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4993063.

The product of its (nonzero) digits is 768320, while the sum is 47.

The spelling of 20120417707457 in words is "twenty trillion, one hundred twenty billion, four hundred seventeen million, seven hundred seven thousand, four hundred fifty-seven".