15450440263 has 2 divisors, whose sum is σ = 15450440264. Its totient is φ = 15450440262.

The previous prime is 15450440261. The next prime is 15450440267. The reversal of 15450440263 is 36204405451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15450440263 - 2¹ = 15450440261 is a prime.

It is a super-2 number, since 2×15450440263² (a number of 21 digits) contains 22 as substring.

Together with 15450440261, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15450440261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7725220131 + 7725220132.

It is an arithmetic number, because the mean of its divisors is an integer number (7725220132).

Almost surely, 2^15450440263 is an apocalyptic number.

15450440263 is a deficient number, since it is larger than the sum of its proper divisors (1).

15450440263 is an equidigital number, since it uses as much as digits as its factorization.

15450440263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 34.

The spelling of 15450440263 in words is "fifteen billion, four hundred fifty million, four hundred forty thousand, two hundred sixty-three".