743505898740 has 144 divisors (see below), whose sum is σ = 2334114667584. Its totient is φ = 175372185600.

The previous prime is 743505898739. The next prime is 743505898741. The reversal of 743505898740 is 47898505347.

It is an interprime number because it is at equal distance from previous prime (743505898739) and next prime (743505898741).

It is a super-2 number, since 2×743505898740² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (743505898741) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 492100 + ... + 1314980.

It is an arithmetic number, because the mean of its divisors is an integer number (16209129636).

Almost surely, 2^743505898740 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 743505898740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167057333792).

743505898740 is an abundant number, since it is smaller than the sum of its proper divisors (1590608768844).

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

743505898740 is a wasteful number, since it uses less digits than its factorization.

743505898740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822978 (or 822939 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 60.

The spelling of 743505898740 in words is "seven hundred forty-three billion, five hundred five million, eight hundred ninety-eight thousand, seven hundred forty".