2278001297444 has 54 divisors (see below), whose sum is σ = 4064062903110. Its totient is φ = 1117122083264.

The previous prime is 2278001297441. The next prime is 2278001297449. The reversal of 2278001297444 is 4447921008722.

It can be written as a sum of positive squares in only one way, i.e., 1638113292544 + 639888004900 = 1279888^2 + 799930^2 .

It is a super-2 number, since 2×2278001297444² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2278001297392 and 2278001297401.

It is not an unprimeable number, because it can be changed into a prime (2278001297441) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4755743597 + ... + 4755744075.

Almost surely, 2^{2278001297444} is an apocalyptic number.

It is an amenable number.

2278001297444 is a deficient number, since it is larger than the sum of its proper divisors (1786061605666).

2278001297444 is an frugal number, since it uses more digits than its factorization.

2278001297444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 50.

The spelling of 2278001297444 in words is "two trillion, two hundred seventy-eight billion, one million, two hundred ninety-seven thousand, four hundred forty-four".