1240694044650 has 36 divisors (see below), whose sum is σ = 3333331334502. Its totient is φ = 330851745120.

The previous prime is 1240694044643. The next prime is 1240694044651. The reversal of 1240694044650 is 564404960421.

1240694044650 is a `hidden beast` number, since 124 + 0 + 69 + 4 + 0 + 4 + 465 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 921605760009 + 319088284641 = 960003^2 + 564879^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1240694044596 and 1240694044605.

It is not an unprimeable number, because it can be changed into a prime (1240694044651) 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, 1378548489 + ... + 1378549388.

Almost surely, 2^{1240694044650} is an apocalyptic number.

1240694044650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240694044650 is an abundant number, since it is smaller than the sum of its proper divisors (2092637289852).

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

1240694044650 is a wasteful number, since it uses less digits than its factorization.

1240694044650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757097895 (or 2757097887 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 1240694044650 in words is "one trillion, two hundred forty billion, six hundred ninety-four million, forty-four thousand, six hundred fifty".