155401305450 has 48 divisors (see below), whose sum is σ = 388931014560. Its totient is φ = 41060157120.

The previous prime is 155401305427. The next prime is 155401305467. The reversal of 155401305450 is 54503104551.

155401305450 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4735984 + ... + 4768683.

It is an arithmetic number, because the mean of its divisors is an integer number (8102729470).

Almost surely, 2^155401305450 is an apocalyptic number.

155401305450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155401305450 is an abundant number, since it is smaller than the sum of its proper divisors (233529709110).

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

155401305450 is a wasteful number, since it uses less digits than its factorization.

155401305450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9504791 (or 9504786 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 155401305450 in words is "one hundred fifty-five billion, four hundred one million, three hundred five thousand, four hundred fifty".