4511420572491 has 32 divisors (see below), whose sum is σ = 7844826862080. Its totient is φ = 2508280159968.

The previous prime is 4511420572487. The next prime is 4511420572493. The reversal of 4511420572491 is 1942750241154.

It is a happy number.

4511420572491 is a `hidden beast` number, since 4 + 5 + 1 + 14 + 20 + 572 + 49 + 1 = 666.

It is not a de Polignac number, because 4511420572491 - 2² = 4511420572487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4511420572493) 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, 322559901 + ... + 322573886.

It is an arithmetic number, because the mean of its divisors is an integer number (245150839440).

Almost surely, 2^{4511420572491} is an apocalyptic number.

4511420572491 is a deficient number, since it is larger than the sum of its proper divisors (3333406289589).

4511420572491 is a wasteful number, since it uses less digits than its factorization.

4511420572491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645133840 (or 645133834 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 4511420572491 in words is "four trillion, five hundred eleven billion, four hundred twenty million, five hundred seventy-two thousand, four hundred ninety-one".