155361617380 has 24 divisors (see below), whose sum is σ = 326274246648. Its totient is φ = 62141818368.

The previous prime is 155361617377. The next prime is 155361617393. The reversal of 155361617380 is 83716163551.

It can be written as a sum of positive squares in 4 ways, for example, as 6891656256 + 148469961124 = 83016^2 + 385318^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 155361617380.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305722 + ... + 635758.

It is an arithmetic number, because the mean of its divisors is an integer number (13594760277).

Almost surely, 2^155361617380 is an apocalyptic number.

155361617380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155361617380 is an abundant number, since it is smaller than the sum of its proper divisors (170912629268).

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

155361617380 is a wasteful number, since it uses less digits than its factorization.

155361617380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353583 (or 353581 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 46.

The spelling of 155361617380 in words is "one hundred fifty-five billion, three hundred sixty-one million, six hundred seventeen thousand, three hundred eighty".