155354355540 has 192 divisors, whose sum is σ = 494174822400. Its totient is φ = 40499851392.

The previous prime is 155354355523. The next prime is 155354355557. The reversal of 155354355540 is 45553453551.

155354355540 is a `hidden beast` number, since 1 + 5 + 5 + 3 + 54 + 3 + 55 + 540 = 666.

It is an interprime number because it is at equal distance from previous prime (155354355523) and next prime (155354355557).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 25859217 + ... + 25865223.

It is an arithmetic number, because the mean of its divisors is an integer number (2573827200).

Almost surely, 2^155354355540 is an apocalyptic number.

155354355540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155354355540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247087411200).

155354355540 is an abundant number, since it is smaller than the sum of its proper divisors (338820466860).

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

155354355540 is a wasteful number, since it uses less digits than its factorization.

155354355540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091 (or 7083 counting only the distinct ones).

The product of its (nonzero) digits is 2250000, while the sum is 45.

The spelling of 155354355540 in words is "one hundred fifty-five billion, three hundred fifty-four million, three hundred fifty-five thousand, five hundred forty".