10020543454491 has 8 divisors (see below), whose sum is σ = 13419068382480. Its totient is φ = 6651190414752.

The previous prime is 10020543454483. The next prime is 10020543454501. The reversal of 10020543454491 is 19445434502001.

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

It is not a de Polignac number, because 10020543454491 - 2³ = 10020543454483 is a prime.

It is a super-2 number, since 2×10020543454491² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10020543454291) 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, 7292971260 + ... + 7292972633.

It is an arithmetic number, because the mean of its divisors is an integer number (1677383547810).

Almost surely, 2^{10020543454491} is an apocalyptic number.

10020543454491 is a deficient number, since it is larger than the sum of its proper divisors (3398524927989).

10020543454491 is a wasteful number, since it uses less digits than its factorization.

10020543454491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14585944125.

The product of its (nonzero) digits is 345600, while the sum is 42.

Adding to 10020543454491 its reverse (19445434502001), we get a palindrome (29465977956492).

The spelling of 10020543454491 in words is "ten trillion, twenty billion, five hundred forty-three million, four hundred fifty-four thousand, four hundred ninety-one".