1023151454261 has 2 divisors, whose sum is σ = 1023151454262. Its totient is φ = 1023151454260.

The previous prime is 1023151454257. The next prime is 1023151454267. The reversal of 1023151454261 is 1624541513201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 872133722161 + 151017732100 = 933881^2 + 388610^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023151454261 - 2² = 1023151454257 is a prime.

It is a super-2 number, since 2×1023151454261² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023151454267) 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 as a sum of consecutive naturals, namely, 511575727130 + 511575727131.

It is an arithmetic number, because the mean of its divisors is an integer number (511575727131).

Almost surely, 2^{1023151454261} is an apocalyptic number.

It is an amenable number.

1023151454261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023151454261 is an equidigital number, since it uses as much as digits as its factorization.

1023151454261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28800, while the sum is 35.

Adding to 1023151454261 its reverse (1624541513201), we get a palindrome (2647692967462).

The spelling of 1023151454261 in words is "one trillion, twenty-three billion, one hundred fifty-one million, four hundred fifty-four thousand, two hundred sixty-one".