738551520540 has 192 divisors, whose sum is σ = 2420261760000. Its totient is φ = 186456971520.

The previous prime is 738551520493. The next prime is 738551520557. The reversal of 738551520540 is 45025155837.

738551520540 is a `hidden beast` number, since 7 + 3 + 8 + 5 + 51 + 52 + 0 + 540 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 15869505 + ... + 15915975.

It is an arithmetic number, because the mean of its divisors is an integer number (12605530000).

Almost surely, 2^738551520540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 738551520540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1210130880000).

738551520540 is an abundant number, since it is smaller than the sum of its proper divisors (1681710239460).

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

738551520540 is a wasteful number, since it uses less digits than its factorization.

738551520540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48057 (or 48049 counting only the distinct ones).

The product of its (nonzero) digits is 840000, while the sum is 45.

The spelling of 738551520540 in words is "seven hundred thirty-eight billion, five hundred fifty-one million, five hundred twenty thousand, five hundred forty".