155488499712 has 1728 divisors, whose sum is σ = 642320733600. Its totient is φ = 35672555520.

The previous prime is 155488499707. The next prime is 155488499717. The reversal of 155488499712 is 217994884551.

155488499712 is a `hidden beast` number, since 1 + 5 + 54 + 88 + 499 + 7 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (155488499707) and next prime (155488499717).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 155488499712.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155488499717) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3792402412 + ... + 3792402452.

Almost surely, 2^155488499712 is an apocalyptic number.

155488499712 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 155488499712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321160366800).

155488499712 is an abundant number, since it is smaller than the sum of its proper divisors (486832233888).

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

155488499712 is a wasteful number, since it uses less digits than its factorization.

155488499712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 102 counting only the distinct ones).

The product of its digits is 29030400, while the sum is 63.

The spelling of 155488499712 in words is "one hundred fifty-five billion, four hundred eighty-eight million, four hundred ninety-nine thousand, seven hundred twelve".