215120455400503 has 2 divisors, whose sum is σ = 215120455400504. Its totient is φ = 215120455400502.

The previous prime is 215120455400353. The next prime is 215120455400507. The reversal of 215120455400503 is 305004554021512.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215120455400503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215120455400507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107560227700251 + 107560227700252.

It is an arithmetic number, because the mean of its divisors is an integer number (107560227700252).

Almost surely, 2^{215120455400503} is an apocalyptic number.

215120455400503 is a deficient number, since it is larger than the sum of its proper divisors (1).

215120455400503 is an equidigital number, since it uses as much as digits as its factorization.

215120455400503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 215120455400503 in words is "two hundred fifteen trillion, one hundred twenty billion, four hundred fifty-five million, four hundred thousand, five hundred three".