123277074856 has 32 divisors (see below), whose sum is σ = 248988821760. Its totient is φ = 56882492352.

The previous prime is 123277074853. The next prime is 123277074857. The reversal of 123277074856 is 658470772321.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (123277074853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259761 + ... + 560383.

It is an arithmetic number, because the mean of its divisors is an integer number (7780900680).

Almost surely, 2^123277074856 is an apocalyptic number.

It is an amenable number.

123277074856 is an abundant number, since it is smaller than the sum of its proper divisors (125711746904).

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

123277074856 is a wasteful number, since it uses less digits than its factorization.

123277074856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304585 (or 304581 counting only the distinct ones).

The product of its (nonzero) digits is 3951360, while the sum is 52.

The spelling of 123277074856 in words is "one hundred twenty-three billion, two hundred seventy-seven million, seventy-four thousand, eight hundred fifty-six".