1154734506721 has 2 divisors, whose sum is σ = 1154734506722. Its totient is φ = 1154734506720.

The previous prime is 1154734506683. The next prime is 1154734506773. The reversal of 1154734506721 is 1276054374511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 841430117025 + 313304389696 = 917295^2 + 559736^2 .

It is a cyclic number.

It is not a de Polignac number, because 1154734506721 - 2¹⁵ = 1154734473953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1154734507721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577367253360 + 577367253361.

It is an arithmetic number, because the mean of its divisors is an integer number (577367253361).

Almost surely, 2^{1154734506721} is an apocalyptic number.

It is an amenable number.

1154734506721 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154734506721 is an equidigital number, since it uses as much as digits as its factorization.

1154734506721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 705600, while the sum is 46.

The spelling of 1154734506721 in words is "one trillion, one hundred fifty-four billion, seven hundred thirty-four million, five hundred six thousand, seven hundred twenty-one".