123537106755 has 48 divisors (see below), whose sum is σ = 216915079680. Its totient is φ = 65030382144.

The previous prime is 123537106739. The next prime is 123537106789. The reversal of 123537106755 is 557601735321.

123537106755 is a `hidden beast` number, since 1 + 2 + 3 + 537 + 1 + 0 + 67 + 55 = 666.

It is not a de Polignac number, because 123537106755 - 2⁴ = 123537106739 is a prime.

It is a super-2 number, since 2×123537106755² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 123537106755.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20854224 + ... + 20860146.

It is an arithmetic number, because the mean of its divisors is an integer number (4519064160).

Almost surely, 2^123537106755 is an apocalyptic number.

123537106755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123537106755 is a deficient number, since it is larger than the sum of its proper divisors (93377972925).

123537106755 is a wasteful number, since it uses less digits than its factorization.

123537106755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11880 (or 11877 counting only the distinct ones).

The product of its (nonzero) digits is 661500, while the sum is 45.

The spelling of 123537106755 in words is "one hundred twenty-three billion, five hundred thirty-seven million, one hundred six thousand, seven hundred fifty-five".