47788135553 has 4 divisors (see below), whose sum is σ = 48092518740. Its totient is φ = 47483752368.

The previous prime is 47788135517. The next prime is 47788135573. The reversal of 47788135553 is 35553188774.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18194502769 + 29593632784 = 134887^2 + 172028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47788135553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47788135573) 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, 152191358 + ... + 152191671.

It is an arithmetic number, because the mean of its divisors is an integer number (12023129685).

Almost surely, 2^47788135553 is an apocalyptic number.

It is an amenable number.

47788135553 is a deficient number, since it is larger than the sum of its proper divisors (304383187).

47788135553 is a wasteful number, since it uses less digits than its factorization.

47788135553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304383186.

The product of its digits is 14112000, while the sum is 56.

The spelling of 47788135553 in words is "forty-seven billion, seven hundred eighty-eight million, one hundred thirty-five thousand, five hundred fifty-three".