20120471342457 has 32 divisors (see below), whose sum is σ = 27459139760640. Its totient is φ = 13101438007680.

The previous prime is 20120471342443. The next prime is 20120471342459. The reversal of 20120471342457 is 75424317402102.

It is not a de Polignac number, because 20120471342457 - 2¹⁴ = 20120471326073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120471342459) 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, 183682098 + ... + 183791604.

It is an arithmetic number, because the mean of its divisors is an integer number (858098117520).

Almost surely, 2^{20120471342457} is an apocalyptic number.

It is an amenable number.

20120471342457 is a deficient number, since it is larger than the sum of its proper divisors (7338668418183).

20120471342457 is a wasteful number, since it uses less digits than its factorization.

20120471342457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117973.

The product of its (nonzero) digits is 376320, while the sum is 42.

Adding to 20120471342457 its reverse (75424317402102), we get a palindrome (95544788744559).

The spelling of 20120471342457 in words is "twenty trillion, one hundred twenty billion, four hundred seventy-one million, three hundred forty-two thousand, four hundred fifty-seven".