47781830311611 has 32 divisors (see below), whose sum is σ = 74597199360768. Its totient is φ = 26881873597440.

The previous prime is 47781830311609. The next prime is 47781830311651. The reversal of 47781830311611 is 11611303818774.

It is a happy number.

It is not a de Polignac number, because 47781830311611 - 2¹ = 47781830311609 is a prime.

It is a super-2 number, since 2×47781830311611² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (47781830311651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 583333041 + ... + 583414946.

It is an arithmetic number, because the mean of its divisors is an integer number (2331162480024).

Almost surely, 2^{47781830311611} is an apocalyptic number.

47781830311611 is a deficient number, since it is larger than the sum of its proper divisors (26815369049157).

47781830311611 is a wasteful number, since it uses less digits than its factorization.

47781830311611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166748091.

The product of its (nonzero) digits is 677376, while the sum is 51.

The spelling of 47781830311611 in words is "forty-seven trillion, seven hundred eighty-one billion, eight hundred thirty million, three hundred eleven thousand, six hundred eleven".