155890135488 has 224 divisors, whose sum is σ = 432369285120. Its totient is φ = 49512960000.

The previous prime is 155890135469. The next prime is 155890135493. The reversal of 155890135488 is 884531098551.

155890135488 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×155890135488³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126842458 + ... + 126843686.

Almost surely, 2^155890135488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155890135488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216184642560).

155890135488 is an abundant number, since it is smaller than the sum of its proper divisors (276479149632).

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

155890135488 is a wasteful number, since it uses less digits than its factorization.

155890135488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 6912000, while the sum is 57.

The spelling of 155890135488 in words is "one hundred fifty-five billion, eight hundred ninety million, one hundred thirty-five thousand, four hundred eighty-eight".