11620278253 has 4 divisors (see below), whose sum is σ = 11651432188. Its totient is φ = 11589124320.

The previous prime is 11620278211. The next prime is 11620278281. The reversal of 11620278253 is 35287202611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35287202611 = 409 ⋅86276779.

It can be written as a sum of positive squares in 2 ways, for example, as 9904827529 + 1715450724 = 99523^2 + 41418^2 .

It is a cyclic number.

It is not a de Polignac number, because 11620278253 - 2¹⁷ = 11620147181 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 (11620278853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15576408 + ... + 15577153.

It is an arithmetic number, because the mean of its divisors is an integer number (2912858047).

Almost surely, 2^11620278253 is an apocalyptic number.

It is an amenable number.

11620278253 is a deficient number, since it is larger than the sum of its proper divisors (31153935).

11620278253 is an equidigital number, since it uses as much as digits as its factorization.

11620278253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31153934.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 11620278253 in words is "eleven billion, six hundred twenty million, two hundred seventy-eight thousand, two hundred fifty-three".