10505778214 has 8 divisors (see below), whose sum is σ = 15764238360. Its totient is φ = 5251032096.

The previous prime is 10505778211. The next prime is 10505778223. The reversal of 10505778214 is 41287750501.

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

It is a super-2 number, since 2×10505778214² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10505778211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 921424 + ... + 932755.

It is an arithmetic number, because the mean of its divisors is an integer number (1970529795).

Almost surely, 2^10505778214 is an apocalyptic number.

10505778214 is a deficient number, since it is larger than the sum of its proper divisors (5258460146).

10505778214 is a wasteful number, since it uses less digits than its factorization.

10505778214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857014.

The product of its (nonzero) digits is 78400, while the sum is 40.

The spelling of 10505778214 in words is "ten billion, five hundred five million, seven hundred seventy-eight thousand, two hundred fourteen".