4278073550644 has 12 divisors (see below), whose sum is σ = 7927018638084. Its totient is φ = 2013211082624.

The previous prime is 4278073550633. The next prime is 4278073550657. The reversal of 4278073550644 is 4460553708724.

It can be written as a sum of positive squares in 2 ways, for example, as 1222324825744 + 3055748724900 = 1105588^2 + 1748070^2 .

It is a super-2 number, since 2×4278073550644² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31456423099 + ... + 31456423234.

It is an arithmetic number, because the mean of its divisors is an integer number (660584886507).

Almost surely, 2^{4278073550644} is an apocalyptic number.

It is an amenable number.

4278073550644 is a deficient number, since it is larger than the sum of its proper divisors (3648945087440).

4278073550644 is a wasteful number, since it uses less digits than its factorization.

4278073550644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62912846354 (or 62912846352 counting only the distinct ones).

The product of its (nonzero) digits is 22579200, while the sum is 55.

The spelling of 4278073550644 in words is "four trillion, two hundred seventy-eight billion, seventy-three million, five hundred fifty thousand, six hundred forty-four".