7043312640 has 352 divisors, whose sum is σ = 27731773440. Its totient is φ = 1485766656.

The previous prime is 7043312603. The next prime is 7043312659. The reversal of 7043312640 is 462133407.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 7043312598 and 7043312607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1395241 + ... + 1400279.

Almost surely, 2^7043312640 is an apocalyptic number.

7043312640 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7043312640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13865886720).

7043312640 is an abundant number, since it is smaller than the sum of its proper divisors (20688460800).

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

7043312640 is a wasteful number, since it uses less digits than its factorization.

7043312640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5087 (or 5069 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 7043312640 is about 83924.4460214067. The cubic root of 7043312640 is about 1916.8685064650.

The spelling of 7043312640 in words is "seven billion, forty-three million, three hundred twelve thousand, six hundred forty".