2644746381357 has 16 divisors (see below), whose sum is σ = 3608407682880. Its totient is φ = 1722126292992.

The previous prime is 2644746381337. The next prime is 2644746381377. The reversal of 2644746381357 is 7531836474462.

2644746381357 is digitally balanced in base 2 and base 3, 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 (2644746381337) and next prime (2644746381377).

It is not a de Polignac number, because 2644746381357 - 2¹¹ = 2644746379309 is a prime.

It is a super-2 number, since 2×2644746381357² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2644746381357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644746381337) 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, 7438443 + ... + 7785879.

It is an arithmetic number, because the mean of its divisors is an integer number (225525480180).

Almost surely, 2^{2644746381357} is an apocalyptic number.

It is an amenable number.

2644746381357 is a deficient number, since it is larger than the sum of its proper divisors (963661301523).

2644746381357 is a wasteful number, since it uses less digits than its factorization.

2644746381357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406492.

The product of its digits is 81285120, while the sum is 60.

The spelling of 2644746381357 in words is "two trillion, six hundred forty-four billion, seven hundred forty-six million, three hundred eighty-one thousand, three hundred fifty-seven".