47438919551 has 4 divisors (see below), whose sum is σ = 47444907432. Its totient is φ = 47432931672.

The previous prime is 47438919533. The next prime is 47438919569. The reversal of 47438919551 is 15591983474.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (47438919533) and next prime (47438919569).

It is a cyclic number.

It is not a de Polignac number, because 47438919551 - 2²⁶ = 47371810687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47438913551) 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, 2982041 + ... + 2997906.

It is an arithmetic number, because the mean of its divisors is an integer number (11861226858).

Almost surely, 2^47438919551 is an apocalyptic number.

47438919551 is a deficient number, since it is larger than the sum of its proper divisors (5987881).

47438919551 is an equidigital number, since it uses as much as digits as its factorization.

47438919551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5987880.

The product of its digits is 5443200, while the sum is 56.

The spelling of 47438919551 in words is "forty-seven billion, four hundred thirty-eight million, nine hundred nineteen thousand, five hundred fifty-one".