2719664640 has 960 divisors, whose sum is σ = 12427240320. Its totient is φ = 557383680.

The previous prime is 2719664621. The next prime is 2719664657. The reversal of 2719664640 is 464669172.

It is a tau number, because it is divible by the number of its divisors (960).

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 37255644 + ... + 37255716.

It is an arithmetic number, because the mean of its divisors is an integer number (12945042).

Almost surely, 2^2719664640 is an apocalyptic number.

2719664640 is a gapful number since it is divisible by the number (20) 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 2719664640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6213620160).

2719664640 is an abundant number, since it is smaller than the sum of its proper divisors (9707575680).

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

2719664640 is a wasteful number, since it uses less digits than its factorization.

2719664640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 2719664640 is about 52150.4040252806. The cubic root of 2719664640 is about 1395.8490380075.

The spelling of 2719664640 in words is "two billion, seven hundred nineteen million, six hundred sixty-four thousand, six hundred forty".