155253062640 has 320 divisors, whose sum is σ = 534488040576. Its totient is φ = 37031510016.

The previous prime is 155253062633. The next prime is 155253062669. The reversal of 155253062640 is 46260352551.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29665464 + ... + 29670696.

Almost surely, 2^155253062640 is an apocalyptic number.

155253062640 is a gapful number since it is divisible by the number (10) 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 155253062640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267244020288).

155253062640 is an abundant number, since it is smaller than the sum of its proper divisors (379234977936).

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

155253062640 is a wasteful number, since it uses less digits than its factorization.

155253062640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556 (or 5550 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 155253062640 in words is "one hundred fifty-five billion, two hundred fifty-three million, sixty-two thousand, six hundred forty".