155421410261532 has 12 divisors (see below), whose sum is σ = 362649957276936. Its totient is φ = 51807136753840.

The previous prime is 155421410261531. The next prime is 155421410261569. The reversal of 155421410261532 is 235162014124551.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155421410261531) 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, 6475892094219 + ... + 6475892094242.

It is an arithmetic number, because the mean of its divisors is an integer number (30220829773078).

Almost surely, 2^{155421410261532} is an apocalyptic number.

155421410261532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155421410261532 is an abundant number, since it is smaller than the sum of its proper divisors (207228547015404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155421410261532 is a wasteful number, since it uses less digits than its factorization.

155421410261532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12951784188468 (or 12951784188466 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The spelling of 155421410261532 in words is "one hundred fifty-five trillion, four hundred twenty-one billion, four hundred ten million, two hundred sixty-one thousand, five hundred thirty-two".