155505226340 has 48 divisors (see below), whose sum is σ = 333017177472. Its totient is φ = 60982546176.

The previous prime is 155505226297. The next prime is 155505226361. The reversal of 155505226340 is 43622505551.

It is a junction number, because it is equal to n+sod(n) for n = 155505226294 and 155505226303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75074 + ... + 562713.

It is an arithmetic number, because the mean of its divisors is an integer number (6937857864).

Almost surely, 2^155505226340 is an apocalyptic number.

155505226340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155505226340 is an abundant number, since it is smaller than the sum of its proper divisors (177511951132).

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

155505226340 is a wasteful number, since it uses less digits than its factorization.

155505226340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638036 (or 638034 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 155505226340 in words is "one hundred fifty-five billion, five hundred five million, two hundred twenty-six thousand, three hundred forty".