234855138487 has 4 divisors (see below), whose sum is σ = 235610300016. Its totient is φ = 234099976960.

The previous prime is 234855138473. The next prime is 234855138547. The reversal of 234855138487 is 784831558432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234855138487 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 (234855138407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377580298 + ... + 377580919.

It is an arithmetic number, because the mean of its divisors is an integer number (58902575004).

Almost surely, 2^234855138487 is an apocalyptic number.

234855138487 is a deficient number, since it is larger than the sum of its proper divisors (755161529).

234855138487 is an equidigital number, since it uses as much as digits as its factorization.

234855138487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755161528.

The product of its digits is 25804800, while the sum is 58.

It can be divided in two parts, 234855138 and 487, that added together give a square (234855625 = 15325²).

The spelling of 234855138487 in words is "two hundred thirty-four billion, eight hundred fifty-five million, one hundred thirty-eight thousand, four hundred eighty-seven".