155245104052040 has 16 divisors (see below), whose sum is σ = 349301484117180. Its totient is φ = 62098041620800.

The previous prime is 155245104052037. The next prime is 155245104052057. The reversal of 155245104052040 is 40250401542551.

It can be written as a sum of positive squares in 2 ways, for example, as 154824715208164 + 420388843876 = 12442858^2 + 648374^2 .

It is a junction number, because it is equal to n+sod(n) for n = 155245104051985 and 155245104052003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940563800611 + ... + 1940563800690.

Almost surely, 2^{155245104052040} is an apocalyptic number.

155245104052040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155245104052040 is an abundant number, since it is smaller than the sum of its proper divisors (194056380065140).

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

155245104052040 is a wasteful number, since it uses less digits than its factorization.

155245104052040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881127601312 (or 3881127601308 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 38.

Adding to 155245104052040 its reverse (40250401542551), we get a palindrome (195495505594591).

The spelling of 155245104052040 in words is "one hundred fifty-five trillion, two hundred forty-five billion, one hundred four million, fifty-two thousand, forty".