47917191478 has 8 divisors (see below), whose sum is σ = 77404693968. Its totient is φ = 22115626824.

The previous prime is 47917191391. The next prime is 47917191479. The reversal of 47917191478 is 87419171974.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47917191479) 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, 921484426 + ... + 921484477.

It is an arithmetic number, because the mean of its divisors is an integer number (9675586746).

Almost surely, 2^47917191478 is an apocalyptic number.

47917191478 is a deficient number, since it is larger than the sum of its proper divisors (29487502490).

47917191478 is a wasteful number, since it uses less digits than its factorization.

47917191478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842968918.

The product of its digits is 3556224, while the sum is 58.

The spelling of 47917191478 in words is "forty-seven billion, nine hundred seventeen million, one hundred ninety-one thousand, four hundred seventy-eight".