123557054065 has 8 divisors (see below), whose sum is σ = 148592906280. Its totient is φ = 98629348992.

The previous prime is 123557054057. The next prime is 123557054083. The reversal of 123557054065 is 560450755321.

It can be written as a sum of positive squares in 4 ways, for example, as 3472627041 + 120084427024 = 58929^2 + 346532^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123557054065 - 2³ = 123557054057 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27034270 + ... + 27038839.

It is an arithmetic number, because the mean of its divisors is an integer number (18574113285).

Almost surely, 2^123557054065 is an apocalyptic number.

It is an amenable number.

123557054065 is a deficient number, since it is larger than the sum of its proper divisors (25035852215).

123557054065 is an equidigital number, since it uses as much as digits as its factorization.

123557054065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54073571.

The product of its (nonzero) digits is 630000, while the sum is 43.

The spelling of 123557054065 in words is "one hundred twenty-three billion, five hundred fifty-seven million, fifty-four thousand, sixty-five".