47901493945 has 8 divisors (see below), whose sum is σ = 57494259720. Its totient is φ = 38312883840.

The previous prime is 47901493943. The next prime is 47901493967. The reversal of 47901493945 is 54939410974.

It can be written as a sum of positive squares in 4 ways, for example, as 12299049 + 47889194896 = 3507^2 + 218836^2 .

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

It is not a de Polignac number, because 47901493945 - 2¹ = 47901493943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47901493943) 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 7 ways as a sum of consecutive naturals, for example, 1013500 + ... + 1059709.

It is an arithmetic number, because the mean of its divisors is an integer number (7186782465).

Almost surely, 2^47901493945 is an apocalyptic number.

It is an amenable number.

47901493945 is a deficient number, since it is larger than the sum of its proper divisors (9592765775).

47901493945 is a wasteful number, since it uses less digits than its factorization.

47901493945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2077835.

The product of its (nonzero) digits is 4898880, while the sum is 55.

The spelling of 47901493945 in words is "forty-seven billion, nine hundred one million, four hundred ninety-three thousand, nine hundred forty-five".