155990465488 has 80 divisors (see below), whose sum is σ = 356620924800. Its totient is φ = 65164515840.

The previous prime is 155990465483. The next prime is 155990465503. The reversal of 155990465488 is 884564099551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155990465483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375093 + ... + 672811.

It is an arithmetic number, because the mean of its divisors is an integer number (4457761560).

Almost surely, 2^155990465488 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 155990465488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178310462400).

155990465488 is an abundant number, since it is smaller than the sum of its proper divisors (200630459312).

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

155990465488 is a wasteful number, since it uses less digits than its factorization.

155990465488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297980 (or 297974 counting only the distinct ones).

The product of its (nonzero) digits is 62208000, while the sum is 64.

The spelling of 155990465488 in words is "one hundred fifty-five billion, nine hundred ninety million, four hundred sixty-five thousand, four hundred eighty-eight".