156261243664253 has 16 divisors (see below), whose sum is σ = 194188730002176. Its totient is φ = 122434927280640.

The previous prime is 156261243664237. The next prime is 156261243664313. The reversal of 156261243664253 is 352466342162651.

It is not a de Polignac number, because 156261243664253 - 2⁴ = 156261243664237 is a prime.

It is a Smith number, since the sum of its digits (56) 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 not an unprimeable number, because it can be changed into a prime (156261243663253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8335701908 + ... + 8335720653.

It is an arithmetic number, because the mean of its divisors is an integer number (12136795625136).

Almost surely, 2^{156261243664253} is an apocalyptic number.

156261243664253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

156261243664253 is a deficient number, since it is larger than the sum of its proper divisors (37927486337923).

156261243664253 is a wasteful number, since it uses less digits than its factorization.

156261243664253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16671422684.

The product of its digits is 37324800, while the sum is 56.

The spelling of 156261243664253 in words is "one hundred fifty-six trillion, two hundred sixty-one billion, two hundred forty-three million, six hundred sixty-four thousand, two hundred fifty-three".