47807736545 has 8 divisors (see below), whose sum is σ = 58451723496. Its totient is φ = 37524562816.

The previous prime is 47807736539. The next prime is 47807736547. The reversal of 47807736545 is 54563770874.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13524992209 + 34282744336 = 116297^2 + 185156^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 47807736545 - 2²⁴ = 47790959329 is a prime.

It is a super-2 number, since 2×47807736545² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47807736547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90203012 + ... + 90203541.

It is an arithmetic number, because the mean of its divisors is an integer number (7306465437).

Almost surely, 2^47807736545 is an apocalyptic number.

It is an amenable number.

47807736545 is a deficient number, since it is larger than the sum of its proper divisors (10643986951).

47807736545 is a wasteful number, since it uses less digits than its factorization.

47807736545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180406611.

The product of its (nonzero) digits is 19756800, while the sum is 56.

The spelling of 47807736545 in words is "forty-seven billion, eight hundred seven million, seven hundred thirty-six thousand, five hundred forty-five".