155421204054 has 32 divisors (see below), whose sum is σ = 313783008000. Its totient is φ = 51317237664.

The previous prime is 155421204031. The next prime is 155421204067. The reversal of 155421204054 is 450402124551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2413527 + ... + 2477085.

It is an arithmetic number, because the mean of its divisors is an integer number (9805719000).

Almost surely, 2^155421204054 is an apocalyptic number.

155421204054 is an abundant number, since it is smaller than the sum of its proper divisors (158361803946).

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

155421204054 is a wasteful number, since it uses less digits than its factorization.

155421204054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67412.

The product of its (nonzero) digits is 32000, while the sum is 33.

The spelling of 155421204054 in words is "one hundred fifty-five billion, four hundred twenty-one million, two hundred four thousand, fifty-four".