155127765312 has 336 divisors, whose sum is σ = 492073021440. Its totient is φ = 46420992000.

The previous prime is 155127765301. The next prime is 155127765341. The reversal of 155127765312 is 213567721551.

155127765312 is a `hidden beast` number, since 1 + 5 + 5 + 1 + 277 + 65 + 312 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134775937 + ... + 134777087.

It is an arithmetic number, because the mean of its divisors is an integer number (1464503040).

Almost surely, 2^155127765312 is an apocalyptic number.

155127765312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155127765312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246036510720).

155127765312 is an abundant number, since it is smaller than the sum of its proper divisors (336945256128).

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

155127765312 is a wasteful number, since it uses less digits than its factorization.

155127765312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662 (or 1649 counting only the distinct ones).

The product of its digits is 441000, while the sum is 45.

The spelling of 155127765312 in words is "one hundred fifty-five billion, one hundred twenty-seven million, seven hundred sixty-five thousand, three hundred twelve".