155001452440 has 32 divisors (see below), whose sum is σ = 350406146160. Its totient is φ = 61706736000.

The previous prime is 155001452413. The next prime is 155001452453. The reversal of 155001452440 is 44254100551.

It is a happy number.

155001452440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9174111 + ... + 9190990.

Almost surely, 2^155001452440 is an apocalyptic number.

155001452440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155001452440 is an abundant number, since it is smaller than the sum of its proper divisors (195404693720).

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

155001452440 is a wasteful number, since it uses less digits than its factorization.

155001452440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18365323 (or 18365319 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 155001452440 its reverse (44254100551), we get a palindrome (199255552991).

The spelling of 155001452440 in words is "one hundred fifty-five billion, one million, four hundred fifty-two thousand, four hundred forty".