155400012054 has 128 divisors (see below), whose sum is σ = 399295733760. Its totient is φ = 43882020000.

The previous prime is 155400012037. The next prime is 155400012071. The reversal of 155400012054 is 450210004551.

155400012054 is a `hidden beast` number, since 1 + 55 + 400 + 0 + 1 + 205 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (155400012037) and next prime (155400012071).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 12422767 + ... + 12435269.

It is an arithmetic number, because the mean of its divisors is an integer number (3119497920).

Almost surely, 2^155400012054 is an apocalyptic number.

155400012054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 155400012054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199647866880).

155400012054 is an abundant number, since it is smaller than the sum of its proper divisors (243895721706).

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

155400012054 is a wasteful number, since it uses less digits than its factorization.

155400012054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12903 (or 12897 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The spelling of 155400012054 in words is "one hundred fifty-five billion, four hundred million, twelve thousand, fifty-four".