4525661904491 has 8 divisors (see below), whose sum is σ = 5570045421024. Its totient is φ = 3580743484800.

The previous prime is 4525661904349. The next prime is 4525661904553. The reversal of 4525661904491 is 1944091665254.

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 4525661904491 - 2¹⁰ = 4525661903467 is a prime.

It is a super-2 number, since 2×4525661904491² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4525661901491) 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, 24866274110 + ... + 24866274291.

It is an arithmetic number, because the mean of its divisors is an integer number (696255677628).

Almost surely, 2^{4525661904491} is an apocalyptic number.

4525661904491 is a deficient number, since it is larger than the sum of its proper divisors (1044383516533).

4525661904491 is a wasteful number, since it uses less digits than its factorization.

4525661904491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49732548421.

The product of its (nonzero) digits is 9331200, while the sum is 56.

The spelling of 4525661904491 in words is "four trillion, five hundred twenty-five billion, six hundred sixty-one million, nine hundred four thousand, four hundred ninety-one".