87505515103 has 2 divisors, whose sum is σ = 87505515104. Its totient is φ = 87505515102.

The previous prime is 87505515079. The next prime is 87505515169. The reversal of 87505515103 is 30151550578.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87505515103 is a prime.

It is a super-2 number, since 2×87505515103² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87505513103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43752757551 + 43752757552.

It is an arithmetic number, because the mean of its divisors is an integer number (43752757552).

Almost surely, 2^87505515103 is an apocalyptic number.

87505515103 is a deficient number, since it is larger than the sum of its proper divisors (1).

87505515103 is an equidigital number, since it uses as much as digits as its factorization.

87505515103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105000, while the sum is 40.

The spelling of 87505515103 in words is "eighty-seven billion, five hundred five million, five hundred fifteen thousand, one hundred three".