15255151240550 has 48 divisors (see below), whose sum is σ = 31610939426640. Its totient is φ = 5438441178240.

The previous prime is 15255151240541. The next prime is 15255151240561. The reversal of 15255151240550 is 5504215155251.

It is a junction number, because it is equal to n+sod(n) for n = 15255151240498 and 15255151240507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 404627072 + ... + 404664771.

It is an arithmetic number, because the mean of its divisors is an integer number (658561238055).

Almost surely, 2^{15255151240550} is an apocalyptic number.

15255151240550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15255151240550 is an abundant number, since it is smaller than the sum of its proper divisors (16355788186090).

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

15255151240550 is a wasteful number, since it uses less digits than its factorization.

15255151240550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809291897 (or 809291892 counting only the distinct ones).

The product of its (nonzero) digits is 250000, while the sum is 41.

The spelling of 15255151240550 in words is "fifteen trillion, two hundred fifty-five billion, one hundred fifty-one million, two hundred forty thousand, five hundred fifty".