738689640455 has 16 divisors (see below), whose sum is σ = 960470847840. Its totient is φ = 542147292288.

The previous prime is 738689640433. The next prime is 738689640463. The reversal of 738689640455 is 554046986837.

It is a cyclic number.

It is not a de Polignac number, because 738689640455 - 2²² = 738685446151 is a prime.

It is a Smith number, since the sum of its digits (65) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is a junction number, because it is equal to n+sod(n) for n = 738689640391 and 738689640400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34849700 + ... + 34870889.

It is an arithmetic number, because the mean of its divisors is an integer number (60029427990).

Almost surely, 2^738689640455 is an apocalyptic number.

738689640455 is a deficient number, since it is larger than the sum of its proper divisors (221781207385).

738689640455 is a wasteful number, since it uses less digits than its factorization.

738689640455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69720770.

The product of its (nonzero) digits is 174182400, while the sum is 65.

The spelling of 738689640455 in words is "seven hundred thirty-eight billion, six hundred eighty-nine million, six hundred forty thousand, four hundred fifty-five".