155426121624550 has 48 divisors (see below), whose sum is σ = 331567297879392. Its totient is φ = 53099315539200.

The previous prime is 155426121624539. The next prime is 155426121624647. The reversal of 155426121624550 is 55426121624551.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 155426121624494 and 155426121624503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 790070037 + ... + 790266736.

It is an arithmetic number, because the mean of its divisors is an integer number (6907652039154).

Almost surely, 2^{155426121624550} is an apocalyptic number.

155426121624550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155426121624550 is an abundant number, since it is smaller than the sum of its proper divisors (176141176254842).

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

155426121624550 is a wasteful number, since it uses less digits than its factorization.

155426121624550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580337073 (or 1580337068 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 49.

Subtracting from 155426121624550 its reverse (55426121624551), we obtain a palindrome (99999999999999).

The spelling of 155426121624550 in words is "one hundred fifty-five trillion, four hundred twenty-six billion, one hundred twenty-one million, six hundred twenty-four thousand, five hundred fifty".