10638516394 has 32 divisors (see below), whose sum is σ = 18861201216. Its totient is φ = 4445387520.

The previous prime is 10638516359. The next prime is 10638516431. The reversal of 10638516394 is 49361583601.

It is a super-2 number, since 2×10638516394² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314677 + ... + 346840.

It is an arithmetic number, because the mean of its divisors is an integer number (589412538).

Almost surely, 2^10638516394 is an apocalyptic number.

10638516394 is a deficient number, since it is larger than the sum of its proper divisors (8222684822).

10638516394 is a wasteful number, since it uses less digits than its factorization.

10638516394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661590.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 10638516394 in words is "ten billion, six hundred thirty-eight million, five hundred sixteen thousand, three hundred ninety-four".