10215198787 has 2 divisors, whose sum is σ = 10215198788. Its totient is φ = 10215198786.

The previous prime is 10215198737. The next prime is 10215198811. The reversal of 10215198787 is 78789151201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10215198787 - 2⁷ = 10215198659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10215198787.

It is not a weakly prime, because it can be changed into another prime (10215198737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5107599393 + 5107599394.

It is an arithmetic number, because the mean of its divisors is an integer number (5107599394).

Almost surely, 2^10215198787 is an apocalyptic number.

10215198787 is a deficient number, since it is larger than the sum of its proper divisors (1).

10215198787 is an equidigital number, since it uses as much as digits as its factorization.

10215198787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 49.

The spelling of 10215198787 in words is "ten billion, two hundred fifteen million, one hundred ninety-eight thousand, seven hundred eighty-seven".