155243005504650 has 144 divisors (see below), whose sum is σ = 476675261110464. Its totient is φ = 35483720336640.

The previous prime is 155243005504627. The next prime is 155243005504651. The reversal of 155243005504650 is 56405500342551.

155243005504650 is a `hidden beast` number, since 1 + 5 + 5 + 2 + 4 + 3 + 0 + 0 + 550 + 46 + 50 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 155243005504596 and 155243005504605.

It is not an unprimeable number, because it can be changed into a prime (155243005504651) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 355993542 + ... + 356429358.

Almost surely, 2^{155243005504650} is an apocalyptic number.

155243005504650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155243005504650 is an abundant number, since it is smaller than the sum of its proper divisors (321432255605814).

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

155243005504650 is a wasteful number, since it uses less digits than its factorization.

155243005504650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548925 (or 548917 counting only the distinct ones).

The product of its (nonzero) digits is 1800000, while the sum is 45.

The spelling of 155243005504650 in words is "one hundred fifty-five trillion, two hundred forty-three billion, five million, five hundred four thousand, six hundred fifty".