673156862838 has 48 divisors (see below), whose sum is σ = 1472297389056. Its totient is φ = 222264408240.

The previous prime is 673156862837. The next prime is 673156862843. The reversal of 673156862838 is 838268651376.

It is a happy number.

673156862838 is a `hidden beast` number, since 6 + 7 + 3 + 1 + 568 + 62 + 8 + 3 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673156862837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30171195 + ... + 30193497.

It is an arithmetic number, because the mean of its divisors is an integer number (30672862272).

Almost surely, 2^673156862838 is an apocalyptic number.

673156862838 is an abundant number, since it is smaller than the sum of its proper divisors (799140526218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673156862838 is a wasteful number, since it uses less digits than its factorization.

673156862838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38089 (or 38086 counting only the distinct ones).

The product of its digits is 69672960, while the sum is 63.

The spelling of 673156862838 in words is "six hundred seventy-three billion, one hundred fifty-six million, eight hundred sixty-two thousand, eight hundred thirty-eight".