1226258740240 has 20 divisors (see below), whose sum is σ = 2851051571244. Its totient is φ = 490503496064.

The previous prime is 1226258740237. The next prime is 1226258740279. The reversal of 1226258740240 is 420478526221.

It can be written as a sum of positive squares in 2 ways, for example, as 252823929856 + 973434810384 = 502816^2 + 986628^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 7664117047 + ... + 7664117206.

Almost surely, 2^{1226258740240} is an apocalyptic number.

1226258740240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1226258740240 is an abundant number, since it is smaller than the sum of its proper divisors (1624792831004).

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

1226258740240 is a wasteful number, since it uses less digits than its factorization.

1226258740240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15328234266 (or 15328234260 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 43.

The spelling of 1226258740240 in words is "one trillion, two hundred twenty-six billion, two hundred fifty-eight million, seven hundred forty thousand, two hundred forty".