7900000036440 has 512 divisors, whose sum is σ = 25406244864000. Its totient is φ = 1961593288704.

The previous prime is 7900000036429. The next prime is 7900000036441. The reversal of 7900000036440 is 446300000097.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7900000036441) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7752698251 + ... + 7752699269.

It is an arithmetic number, because the mean of its divisors is an integer number (49621572000).

Almost surely, 2^{7900000036440} 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 7900000036440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12703122432000).

7900000036440 is an abundant number, since it is smaller than the sum of its proper divisors (17506244827560).

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

7900000036440 is a wasteful number, since it uses less digits than its factorization.

7900000036440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1711 (or 1707 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The spelling of 7900000036440 in words is "seven trillion, nine hundred billion, thirty-six thousand, four hundred forty".