2644111001402 has 16 divisors (see below), whose sum is σ = 4271320561032. Its totient is φ = 1220340544320.

The previous prime is 2644111001351. The next prime is 2644111001429. The reversal of 2644111001402 is 2041001114462.

It can be written as a sum of positive squares in 4 ways, for example, as 2002335371521 + 641775629881 = 1415039^2 + 801109^2 .

It is a super-3 number, since 3×2644111001402³ (a number of 38 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077452 + ... + 2539512.

Almost surely, 2^{2644111001402} is an apocalyptic number.

2644111001402 is a deficient number, since it is larger than the sum of its proper divisors (1627209559630).

2644111001402 is a wasteful number, since it uses less digits than its factorization.

2644111001402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531633.

The product of its (nonzero) digits is 1536, while the sum is 26.

Adding to 2644111001402 its reverse (2041001114462), we get a palindrome (4685112115864).

The spelling of 2644111001402 in words is "two trillion, six hundred forty-four billion, one hundred eleven million, one thousand, four hundred two".