1201756726053 has 12 divisors (see below), whose sum is σ = 1869399351820. Its totient is φ = 739542600576.

The previous prime is 1201756726033. The next prime is 1201756726069. The reversal of 1201756726053 is 3506276571021.

It is a happy number.

1201756726053 is a `hidden beast` number, since 1 + 2 + 0 + 17 + 567 + 26 + 0 + 53 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 566584387524 + 635172338529 = 752718^2 + 796977^2 .

It is not a de Polignac number, because 1201756726053 - 2¹⁷ = 1201756594981 is a prime.

It is a super-2 number, since 2×1201756726053² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201756726003) 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 11 ways as a sum of consecutive naturals, for example, 5135712388 + ... + 5135712621.

Almost surely, 2^{1201756726053} is an apocalyptic number.

1201756726053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1201756726053 is a deficient number, since it is larger than the sum of its proper divisors (667642625767).

1201756726053 is a wasteful number, since it uses less digits than its factorization.

1201756726053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10271425028 (or 10271425025 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 1201756726053 in words is "one trillion, two hundred one billion, seven hundred fifty-six million, seven hundred twenty-six thousand, fifty-three".