201653256123 has 24 divisors (see below), whose sum is σ = 320182289856. Its totient is φ = 121281154800.

The previous prime is 201653256107. The next prime is 201653256127. The reversal of 201653256123 is 321652356102.

201653256123 is a `hidden beast` number, since 2 + 0 + 1 + 6 + 5 + 32 + 5 + 612 + 3 = 666.

It is not a de Polignac number, because 201653256123 - 2⁴ = 201653256107 is a prime.

It is a super-2 number, since 2×201653256123² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201653256127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7761465 + ... + 7787402.

It is an arithmetic number, because the mean of its divisors is an integer number (13340928744).

Almost surely, 2^201653256123 is an apocalyptic number.

201653256123 is a deficient number, since it is larger than the sum of its proper divisors (118529033733).

201653256123 is a wasteful number, since it uses less digits than its factorization.

201653256123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15549015 (or 15549012 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The spelling of 201653256123 in words is "two hundred one billion, six hundred fifty-three million, two hundred fifty-six thousand, one hundred twenty-three".