155245253336253 has 16 divisors (see below), whose sum is σ = 232763967522240. Its totient is φ = 102249885730032.

The previous prime is 155245253336227. The next prime is 155245253336273. The reversal of 155245253336253 is 352633352542551.

It is a happy number.

155245253336253 is a `hidden beast` number, since 1 + 5 + 5 + 2 + 4 + 5 + 2 + 5 + 3 + 3 + 3 + 625 + 3 = 666.

It is not a de Polignac number, because 155245253336253 - 2⁵ = 155245253336221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155245253336253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155245253336273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34637492926 + ... + 34637497407.

It is an arithmetic number, because the mean of its divisors is an integer number (14547747970140).

Almost surely, 2^{155245253336253} is an apocalyptic number.

It is an amenable number.

155245253336253 is a deficient number, since it is larger than the sum of its proper divisors (77518714185987).

155245253336253 is an equidigital number, since it uses as much as digits as its factorization.

155245253336253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69274990425 (or 69274990419 counting only the distinct ones).

The product of its digits is 48600000, while the sum is 54.

The spelling of 155245253336253 in words is "one hundred fifty-five trillion, two hundred forty-five billion, two hundred fifty-three million, three hundred thirty-six thousand, two hundred fifty-three".