77831151048873 has 12 divisors (see below), whose sum is σ = 114543958148100. Its totient is φ = 50908425842976.

The previous prime is 77831151048701. The next prime is 77831151048923. The reversal of 77831151048873 is 37884015113877.

77831151048873 is a `hidden beast` number, since 7 + 7 + 8 + 3 + 1 + 1 + 510 + 48 + 8 + 73 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 35438589993024 + 42392561055849 = 5953032^2 + 6510957^2 .

It is not a de Polignac number, because 77831151048873 - 2¹⁸ = 77831150786729 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77831151048873.

It is not an unprimeable number, because it can be changed into a prime (77831151048073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81584015298 + ... + 81584016251.

It is an arithmetic number, because the mean of its divisors is an integer number (9545329845675).

Almost surely, 2^{77831151048873} is an apocalyptic number.

It is an amenable number.

77831151048873 is a deficient number, since it is larger than the sum of its proper divisors (36712807099227).

77831151048873 is a wasteful number, since it uses less digits than its factorization.

77831151048873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163168031608 (or 163168031605 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 63.

The spelling of 77831151048873 in words is "seventy-seven trillion, eight hundred thirty-one billion, one hundred fifty-one million, forty-eight thousand, eight hundred seventy-three".