1226736615040 has 48 divisors (see below), whose sum is σ = 2932734206790. Its totient is φ = 490683438080.

The previous prime is 1226736614977. The next prime is 1226736615047. The reversal of 1226736615040 is 405166376221.

It can be written as a sum of positive squares in 3 ways, for example, as 1165069819456 + 61666795584 = 1079384^2 + 248328^2 .

It is not an unprimeable number, because it can be changed into a prime (1226736615047) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27997950 + ... + 28041730.

Almost surely, 2^{1226736615040} is an apocalyptic number.

1226736615040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1226736615040 is an abundant number, since it is smaller than the sum of its proper divisors (1705997591750).

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

1226736615040 is an frugal number, since it uses more digits than its factorization.

1226736615040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87581 (or 43788 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 1226736615040 in words is "one trillion, two hundred twenty-six billion, seven hundred thirty-six million, six hundred fifteen thousand, forty".