123749060565 has 64 divisors (see below), whose sum is σ = 223689392640. Its totient is φ = 57993169920.

The previous prime is 123749060557. The next prime is 123749060573. The reversal of 123749060565 is 565060947321.

It is an interprime number because it is at equal distance from previous prime (123749060557) and next prime (123749060573).

It is not a de Polignac number, because 123749060565 - 2³ = 123749060557 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 247399 + ... + 555611.

It is an arithmetic number, because the mean of its divisors is an integer number (3495146760).

Almost surely, 2^123749060565 is an apocalyptic number.

123749060565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123749060565 is a deficient number, since it is larger than the sum of its proper divisors (99940332075).

123749060565 is a wasteful number, since it uses less digits than its factorization.

123749060565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308334.

The product of its (nonzero) digits is 1360800, while the sum is 48.

The spelling of 123749060565 in words is "one hundred twenty-three billion, seven hundred forty-nine million, sixty thousand, five hundred sixty-five".