10261278551 has 4 divisors (see below), whose sum is σ = 10284442152. Its totient is φ = 10238114952.

The previous prime is 10261278497. The next prime is 10261278583. The reversal of 10261278551 is 15587216201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10261278551 - 2¹⁸ = 10261016407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10261278151) 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, 11581136 + ... + 11582021.

It is an arithmetic number, because the mean of its divisors is an integer number (2571110538).

Almost surely, 2^10261278551 is an apocalyptic number.

10261278551 is a deficient number, since it is larger than the sum of its proper divisors (23163601).

10261278551 is an equidigital number, since it uses as much as digits as its factorization.

10261278551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23163600.

The product of its (nonzero) digits is 33600, while the sum is 38.

The spelling of 10261278551 in words is "ten billion, two hundred sixty-one million, two hundred seventy-eight thousand, five hundred fifty-one".