10402235261 has 16 divisors (see below), whose sum is σ = 11423808000. Its totient is φ = 9393476400.

The previous prime is 10402235257. The next prime is 10402235293. The reversal of 10402235261 is 16253220401.

It is a happy number.

It is not a de Polignac number, because 10402235261 - 2² = 10402235257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10402235261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10402235201) 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, 1438946 + ... + 1446156.

It is an arithmetic number, because the mean of its divisors is an integer number (713988000).

Almost surely, 2^10402235261 is an apocalyptic number.

10402235261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10402235261 is a deficient number, since it is larger than the sum of its proper divisors (1021572739).

10402235261 is a wasteful number, since it uses less digits than its factorization.

10402235261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8080.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 10402235261 its reverse (16253220401), we get a palindrome (26655455662).

The spelling of 10402235261 in words is "ten billion, four hundred two million, two hundred thirty-five thousand, two hundred sixty-one".