47973648545 has 4 divisors (see below), whose sum is σ = 57568378260. Its totient is φ = 38378918832.

The previous prime is 47973648523. The next prime is 47973648599. The reversal of 47973648545 is 54584637974.

It is a happy number.

47973648545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54584637974 = 2 ⋅27292318987.

It can be written as a sum of positive squares in 2 ways, for example, as 18562427536 + 29411221009 = 136244^2 + 171497^2 .

It is a cyclic number.

It is not a de Polignac number, because 47973648545 - 2¹⁸ = 47973386401 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4797364850 + ... + 4797364859.

It is an arithmetic number, because the mean of its divisors is an integer number (14392094565).

Almost surely, 2^47973648545 is an apocalyptic number.

It is an amenable number.

47973648545 is a deficient number, since it is larger than the sum of its proper divisors (9594729715).

47973648545 is an equidigital number, since it uses as much as digits as its factorization.

47973648545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9594729714.

The product of its digits is 101606400, while the sum is 62.

The spelling of 47973648545 in words is "forty-seven billion, nine hundred seventy-three million, six hundred forty-eight thousand, five hundred forty-five".