10265661620 has 24 divisors (see below), whose sum is σ = 22692516000. Its totient is φ = 3890145312.

The previous prime is 10265661589. The next prime is 10265661629. The reversal of 10265661620 is 2616656201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10265661629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13507070 + ... + 13507829.

It is an arithmetic number, because the mean of its divisors is an integer number (945521500).

Almost surely, 2^10265661620 is an apocalyptic number.

10265661620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10265661620 is an abundant number, since it is smaller than the sum of its proper divisors (12426854380).

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

10265661620 is a wasteful number, since it uses less digits than its factorization.

10265661620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27014927 (or 27014925 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 10265661620 in words is "ten billion, two hundred sixty-five million, six hundred sixty-one thousand, six hundred twenty".