10266615840 has 96 divisors (see below), whose sum is σ = 34827541056. Its totient is φ = 2527165440.

The previous prime is 10266615839. The next prime is 10266615841. The reversal of 10266615840 is 4851666201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10266615839) and next prime (10266615841).

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×10266615840² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (10266615841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 816406 + ... + 828885.

It is an arithmetic number, because the mean of its divisors is an integer number (362786886).

Almost surely, 2^10266615840 is an apocalyptic number.

10266615840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10266615840 is an abundant number, since it is smaller than the sum of its proper divisors (24560925216).

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

10266615840 is a wasteful number, since it uses less digits than its factorization.

10266615840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645322 (or 1645314 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 10266615840 in words is "ten billion, two hundred sixty-six million, six hundred fifteen thousand, eight hundred forty".