1260456540621 has 16 divisors (see below), whose sum is σ = 1688008032000. Its totient is φ = 836606236928.

The previous prime is 1260456540611. The next prime is 1260456540703.

1260456540621 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1260456540621 - 2¹³ = 1260456532429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1260456540611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3144265 + ... + 3522401.

It is an arithmetic number, because the mean of its divisors is an integer number (105500502000).

Almost surely, 2^{1260456540621} is an apocalyptic number.

It is an amenable number.

1260456540621 is a deficient number, since it is larger than the sum of its proper divisors (427551491379).

1260456540621 is a wasteful number, since it uses less digits than its factorization.

1260456540621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383028.

The product of its (nonzero) digits is 345600, while the sum is 42.

It can be divided in two parts, 126045 and 6540621, that added together give a palindrome (6666666).

The spelling of 1260456540621 in words is "one trillion, two hundred sixty billion, four hundred fifty-six million, five hundred forty thousand, six hundred twenty-one".