155355445140 has 96 divisors (see below), whose sum is σ = 497212472064. Its totient is φ = 35504455680.

The previous prime is 155355445127. The next prime is 155355445153. The reversal of 155355445140 is 41544553551.

It is an interprime number because it is at equal distance from previous prime (155355445127) and next prime (155355445153).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 155355445092 and 155355445101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3201942 + ... + 3250098.

It is an arithmetic number, because the mean of its divisors is an integer number (5179296584).

Almost surely, 2^155355445140 is an apocalyptic number.

155355445140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155355445140 is an abundant number, since it is smaller than the sum of its proper divisors (341857026924).

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

155355445140 is a wasteful number, since it uses less digits than its factorization.

155355445140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55857 (or 55855 counting only the distinct ones).

The product of its (nonzero) digits is 600000, while the sum is 42.

Adding to 155355445140 its reverse (41544553551), we get a palindrome (196899998691).

The spelling of 155355445140 in words is "one hundred fifty-five billion, three hundred fifty-five million, four hundred forty-five thousand, one hundred forty".