155005303512 has 32 divisors (see below), whose sum is σ = 387522935280. Its totient is φ = 51667144320.

The previous prime is 155005303469. The next prime is 155005303513. The reversal of 155005303512 is 215303500551.

It is a self number, because there is not a number n which added to its sum of digits gives 155005303512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155005303513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1732878 + ... + 1820130.

Almost surely, 2^155005303512 is an apocalyptic number.

155005303512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

155005303512 is an abundant number, since it is smaller than the sum of its proper divisors (232517631768).

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

155005303512 is a wasteful number, since it uses less digits than its factorization.

155005303512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161283 (or 161279 counting only the distinct ones).

The product of its (nonzero) digits is 11250, while the sum is 30.

The spelling of 155005303512 in words is "one hundred fifty-five billion, five million, three hundred three thousand, five hundred twelve".