7357664440 has 64 divisors (see below), whose sum is σ = 18949152960. Its totient is φ = 2518702080.

The previous prime is 7357664437. The next prime is 7357664449. The reversal of 7357664440 is 444667537.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7357664449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162720 + ... + 202960.

It is an arithmetic number, because the mean of its divisors is an integer number (296080515).

Almost surely, 2^7357664440 is an apocalyptic number.

7357664440 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 7357664440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9474576480).

7357664440 is an abundant number, since it is smaller than the sum of its proper divisors (11591488520).

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

7357664440 is a wasteful number, since it uses less digits than its factorization.

7357664440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40912 (or 40908 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 46.

The square root of 7357664440 is about 85776.8292722458. The cubic root of 7357664440 is about 1944.9718752748.

The spelling of 7357664440 in words is "seven billion, three hundred fifty-seven million, six hundred sixty-four thousand, four hundred forty".