2644972512 has 96 divisors (see below), whose sum is σ = 8545324032. Its totient is φ = 697572864.

The previous prime is 2644972511. The next prime is 2644972513. The reversal of 2644972512 is 2152794462.

It is a happy number.

2644972512 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2644972511) and next prime (2644972513).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644972511) 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, 142648 + ... + 160119.

It is an arithmetic number, because the mean of its divisors is an integer number (89013792).

Almost surely, 2^2644972512 is an apocalyptic number.

It is an amenable number.

2644972512 is an abundant number, since it is smaller than the sum of its proper divisors (5900351520).

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

2644972512 is a wasteful number, since it uses less digits than its factorization.

2644972512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302800 (or 302792 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 2644972512 is about 51429.2962425114. The cubic root of 2644972512 is about 1382.9518331477.

The spelling of 2644972512 in words is "two billion, six hundred forty-four million, nine hundred seventy-two thousand, five hundred twelve".