155680894253 has 8 divisors (see below), whose sum is σ = 156259157400. Its totient is φ = 155102748480.

The previous prime is 155680894241. The next prime is 155680894273. The reversal of 155680894253 is 352498086551.

It can be written as a sum of positive squares in 4 ways, for example, as 96737794729 + 58943099524 = 311027^2 + 242782^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155680894253 - 2⁶ = 155680894189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155680894223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3342143 + ... + 3388403.

It is an arithmetic number, because the mean of its divisors is an integer number (19532394675).

Almost surely, 2^155680894253 is an apocalyptic number.

It is an amenable number.

155680894253 is a deficient number, since it is larger than the sum of its proper divisors (578263147).

155680894253 is a wasteful number, since it uses less digits than its factorization.

155680894253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58687.

The product of its (nonzero) digits is 10368000, while the sum is 56.

The spelling of 155680894253 in words is "one hundred fifty-five billion, six hundred eighty million, eight hundred ninety-four thousand, two hundred fifty-three".