50454591781 has 8 divisors (see below), whose sum is σ = 55055365344. Its totient is φ = 45856150320.

The previous prime is 50454591779. The next prime is 50454591823. The reversal of 50454591781 is 18719545405.

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 50454591781 - 2¹ = 50454591779 is a prime.

It is a super-2 number, since 2×50454591781² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50454591721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537630 + ... + 624463.

It is an arithmetic number, because the mean of its divisors is an integer number (6881920668).

Almost surely, 2^50454591781 is an apocalyptic number.

It is an amenable number.

50454591781 is a deficient number, since it is larger than the sum of its proper divisors (4600773563).

50454591781 is a wasteful number, since it uses less digits than its factorization.

50454591781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166051.

The product of its (nonzero) digits is 1008000, while the sum is 49.

The spelling of 50454591781 in words is "fifty billion, four hundred fifty-four million, five hundred ninety-one thousand, seven hundred eighty-one".