10685051440 has 80 divisors (see below), whose sum is σ = 28995858432. Its totient is φ = 3585491712.

The previous prime is 10685051437. The next prime is 10685051491. The reversal of 10685051440 is 4415058601.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×10685051440² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10685051396 and 10685051405.

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, 176664 + ... + 229303.

Almost surely, 2^10685051440 is an apocalyptic number.

10685051440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10685051440 is an abundant number, since it is smaller than the sum of its proper divisors (18310806992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10685051440 is a wasteful number, since it uses less digits than its factorization.

10685051440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406034 (or 406028 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 10685051440 in words is "ten billion, six hundred eighty-five million, fifty-one thousand, four hundred forty".