494761587451 has 4 divisors (see below), whose sum is σ = 494856794032. Its totient is φ = 494666380872.

The previous prime is 494761587449. The next prime is 494761587553. The reversal of 494761587451 is 154785167494.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 494761587451 - 2¹ = 494761587449 is a prime.

It is a super-3 number, since 3×494761587451³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 494761587451.

It is not an unprimeable number, because it can be changed into a prime (494761581451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47595495 + ... + 47605888.

It is an arithmetic number, because the mean of its divisors is an integer number (123714198508).

Almost surely, 2^494761587451 is an apocalyptic number.

494761587451 is a deficient number, since it is larger than the sum of its proper divisors (95206581).

494761587451 is an equidigital number, since it uses as much as digits as its factorization.

494761587451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95206580.

The product of its digits is 33868800, while the sum is 61.

The spelling of 494761587451 in words is "four hundred ninety-four billion, seven hundred sixty-one million, five hundred eighty-seven thousand, four hundred fifty-one".