10399065157 has 6 divisors (see below), whose sum is σ = 11199389222. Its totient is φ = 9598797672.

The previous prime is 10399065143. The next prime is 10399065169. The reversal of 10399065157 is 75156099301.

It can be written as a sum of positive squares in only one way, i.e., 7199352801 + 3199712356 = 84849^2 + 56566^2 .

It is not a de Polignac number, because 10399065157 - 2⁷ = 10399065029 is a prime.

It is a super-2 number, since 2×10399065157² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10399065557) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 353538 + ... + 381820.

Almost surely, 2^10399065157 is an apocalyptic number.

It is an amenable number.

10399065157 is a deficient number, since it is larger than the sum of its proper divisors (800324065).

10399065157 is an frugal number, since it uses more digits than its factorization.

10399065157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56579 (or 28296 counting only the distinct ones).

The product of its (nonzero) digits is 255150, while the sum is 46.

The spelling of 10399065157 in words is "ten billion, three hundred ninety-nine million, sixty-five thousand, one hundred fifty-seven".