155215237321152 has 560 divisors, whose sum is σ = 483415733135104. Its totient is φ = 49179156480000.

The previous prime is 155215237321129. The next prime is 155215237321181. The reversal of 155215237321152 is 251123732512551.

155215237321152 is a `hidden beast` number, since 1 + 5 + 5 + 2 + 1 + 523 + 7 + 3 + 2 + 115 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 155215237321098 and 155215237321107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 7185547152 + ... + 7185568752.

Almost surely, 2^{155215237321152} is an apocalyptic number.

155215237321152 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 155215237321152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241707866567552).

155215237321152 is an abundant number, since it is smaller than the sum of its proper divisors (328200495813952).

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

155215237321152 is a wasteful number, since it uses less digits than its factorization.

155215237321152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22450 (or 22431 counting only the distinct ones).

The product of its digits is 630000, while the sum is 45.

The spelling of 155215237321152 in words is "one hundred fifty-five trillion, two hundred fifteen billion, two hundred thirty-seven million, three hundred twenty-one thousand, one hundred fifty-two".