47122492478 has 4 divisors (see below), whose sum is σ = 70683738720. Its totient is φ = 23561246238.

The previous prime is 47122492453. The next prime is 47122492489. The reversal of 47122492478 is 87429422174.

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

It is a super-3 number, since 3×47122492478³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 11780623118 + ... + 11780623121.

It is an arithmetic number, because the mean of its divisors is an integer number (17670934680).

Almost surely, 2^47122492478 is an apocalyptic number.

47122492478 is a deficient number, since it is larger than the sum of its proper divisors (23561246242).

47122492478 is a wasteful number, since it uses less digits than its factorization.

47122492478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23561246241.

The product of its digits is 1806336, while the sum is 50.

The spelling of 47122492478 in words is "forty-seven billion, one hundred twenty-two million, four hundred ninety-two thousand, four hundred seventy-eight".