20457766743403 has 8 divisors (see below), whose sum is σ = 22317716269296. Its totient is φ = 18597842642400.

The previous prime is 20457766743367. The next prime is 20457766743409. The reversal of 20457766743403 is 30434766775402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20457766743403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20457766743409) 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, 4653976 + ... + 7910437.

It is an arithmetic number, because the mean of its divisors is an integer number (2789714533662).

Almost surely, 2^{20457766743403} is an apocalyptic number.

20457766743403 is a deficient number, since it is larger than the sum of its proper divisors (1859949525893).

20457766743403 is a wasteful number, since it uses less digits than its factorization.

20457766743403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12712445.

The product of its (nonzero) digits is 71124480, while the sum is 58.

The spelling of 20457766743403 in words is "twenty trillion, four hundred fifty-seven billion, seven hundred sixty-six million, seven hundred forty-three thousand, four hundred three".