123071700657 has 8 divisors (see below), whose sum is σ = 164102157184. Its totient is φ = 82044522288.

The previous prime is 123071700641. The next prime is 123071700671. The reversal of 123071700657 is 756007170321.

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

It is not a de Polignac number, because 123071700657 - 2⁴ = 123071700641 is a prime.

It is a super-3 number, since 3×123071700657³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123071707657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730558 + ... + 883095.

It is an arithmetic number, because the mean of its divisors is an integer number (20512769648).

Almost surely, 2^123071700657 is an apocalyptic number.

It is an amenable number.

123071700657 is a deficient number, since it is larger than the sum of its proper divisors (41030456527).

123071700657 is a wasteful number, since it uses less digits than its factorization.

123071700657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1639079.

The product of its (nonzero) digits is 61740, while the sum is 39.

Adding to 123071700657 its reverse (756007170321), we get a palindrome (879078870978).

The spelling of 123071700657 in words is "one hundred twenty-three billion, seventy-one million, seven hundred thousand, six hundred fifty-seven".