47451093819 has 4 divisors (see below), whose sum is σ = 63268125096. Its totient is φ = 31634062544.

The previous prime is 47451093799. The next prime is 47451093841. The reversal of 47451093819 is 91839015474.

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 47451093819 - 2⁷ = 47451093691 is a prime.

It is a super-2 number, since 2×47451093819² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47451093419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7908515634 + ... + 7908515639.

It is an arithmetic number, because the mean of its divisors is an integer number (15817031274).

Almost surely, 2^47451093819 is an apocalyptic number.

47451093819 is a deficient number, since it is larger than the sum of its proper divisors (15817031277).

47451093819 is a wasteful number, since it uses less digits than its factorization.

47451093819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15817031276.

The product of its (nonzero) digits is 1088640, while the sum is 51.

The spelling of 47451093819 in words is "forty-seven billion, four hundred fifty-one million, ninety-three thousand, eight hundred nineteen".