10266512505621 has 16 divisors (see below), whose sum is σ = 13699692988800. Its totient is φ = 6838837727040.

The previous prime is 10266512505619. The next prime is 10266512505629. The reversal of 10266512505621 is 12650521566201.

It is not a de Polignac number, because 10266512505621 - 2¹ = 10266512505619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10266512505629) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49509271 + ... + 49716203.

It is an arithmetic number, because the mean of its divisors is an integer number (856230811800).

Almost surely, 2^{10266512505621} is an apocalyptic number.

It is an amenable number.

10266512505621 is a deficient number, since it is larger than the sum of its proper divisors (3433180483179).

10266512505621 is a wasteful number, since it uses less digits than its factorization.

10266512505621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220156.

The product of its (nonzero) digits is 216000, while the sum is 42.

The spelling of 10266512505621 in words is "ten trillion, two hundred sixty-six billion, five hundred twelve million, five hundred five thousand, six hundred twenty-one".