10205145515 has 8 divisors (see below), whose sum is σ = 12247376208. Its totient is φ = 8163315360.

The previous prime is 10205145469. The next prime is 10205145521. The reversal of 10205145515 is 51554150201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10205145515 - 2⁸ = 10205145259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40892 + ... + 148601.

It is an arithmetic number, because the mean of its divisors is an integer number (1530922026).

Almost surely, 2^10205145515 is an apocalyptic number.

10205145515 is a deficient number, since it is larger than the sum of its proper divisors (2042230693).

10205145515 is a wasteful number, since it uses less digits than its factorization.

10205145515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200269.

The product of its (nonzero) digits is 5000, while the sum is 29.

Adding to 10205145515 its reverse (51554150201), we get a palindrome (61759295716).

The spelling of 10205145515 in words is "ten billion, two hundred five million, one hundred forty-five thousand, five hundred fifteen".