10693834921 has 81 divisors (see below), whose sum is σ = 14711286807. Its totient is φ = 7743415680.

The previous prime is 10693834913. The next prime is 10693834939. The reversal of 10693834921 is 12943839601.

It is a happy number.

The square root of 10693834921 is 103411.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8325650025 + 2368184896 = 91245^2 + 48664^2 .

It is not a de Polignac number, because 10693834921 - 2³ = 10693834913 is a prime.

It is a super-2 number, since 2×10693834921² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10693834621) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 135364960 + ... + 135365038.

Almost surely, 2^10693834921 is an apocalyptic number.

10693834921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10693834921 is the 103411-st square number.

10693834921 is the 51706-th centered octagonal number.

It is an amenable number.

10693834921 is a deficient number, since it is larger than the sum of its proper divisors (4017451886).

10693834921 is an equidigital number, since it uses as much as digits as its factorization.

10693834921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 10693834921 in words is "ten billion, six hundred ninety-three million, eight hundred thirty-four thousand, nine hundred twenty-one".