155014532421 has 16 divisors (see below), whose sum is σ = 236972156928. Its totient is φ = 88294906800.

The previous prime is 155014532399. The next prime is 155014532429. The reversal of 155014532421 is 124235410551.

It is not a de Polignac number, because 155014532421 - 2⁷ = 155014532293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155014532429) 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, 11861065 + ... + 11874126.

It is an arithmetic number, because the mean of its divisors is an integer number (14810759808).

Almost surely, 2^155014532421 is an apocalyptic number.

It is an amenable number.

155014532421 is a deficient number, since it is larger than the sum of its proper divisors (81957624507).

155014532421 is a wasteful number, since it uses less digits than its factorization.

155014532421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23735512.

The product of its (nonzero) digits is 24000, while the sum is 33.

Adding to 155014532421 its reverse (124235410551), we get a palindrome (279249942972).

The spelling of 155014532421 in words is "one hundred fifty-five billion, fourteen million, five hundred thirty-two thousand, four hundred twenty-one".