738643405550 has 24 divisors (see below), whose sum is σ = 1374005289432. Its totient is φ = 295429716000.

The previous prime is 738643405469. The next prime is 738643405559. The reversal of 738643405550 is 55504346837.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (738643405559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147221 + ... + 1224320.

It is an arithmetic number, because the mean of its divisors is an integer number (57250220393).

Almost surely, 2^738643405550 is an apocalyptic number.

738643405550 is a deficient number, since it is larger than the sum of its proper divisors (635361883882).

738643405550 is a wasteful number, since it uses less digits than its factorization.

738643405550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382324 (or 1382319 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 50.

The spelling of 738643405550 in words is "seven hundred thirty-eight billion, six hundred forty-three million, four hundred five thousand, five hundred fifty".