1240340622561 has 12 divisors (see below), whose sum is σ = 1791634440960. Its totient is φ = 826879293240.

The previous prime is 1240340622539. The next prime is 1240340622583. The reversal of 1240340622561 is 1652260430421.

1240340622561 is a `hidden beast` number, since 1 + 2 + 4 + 0 + 34 + 0 + 62 + 2 + 561 = 666.

It is an interprime number because it is at equal distance from previous prime (1240340622539) and next prime (1240340622583).

It is not a de Polignac number, because 1240340622561 - 2¹³ = 1240340614369 is a prime.

It is a super-3 number, since 3×1240340622561³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1240340622061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 647601 + ... + 1702958.

It is an arithmetic number, because the mean of its divisors is an integer number (149302870080).

Almost surely, 2^{1240340622561} is an apocalyptic number.

It is an amenable number.

1240340622561 is a deficient number, since it is larger than the sum of its proper divisors (551293818399).

1240340622561 is a wasteful number, since it uses less digits than its factorization.

1240340622561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409196 (or 2409193 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 1240340622561 in words is "one trillion, two hundred forty billion, three hundred forty million, six hundred twenty-two thousand, five hundred sixty-one".