11736938401 has 4 divisors (see below), whose sum is σ = 11737155204. Its totient is φ = 11736721600.

The previous prime is 11736938399. The next prime is 11736938429. The reversal of 11736938401 is 10483963711.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10483963711 = 13 ⋅806458747.

It can be written as a sum of positive squares in 2 ways, for example, as 1692088225 + 10044850176 = 41135^2 + 100224^2 .

It is a cyclic number.

It is not a de Polignac number, because 11736938401 - 2¹ = 11736938399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11736938491) 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, 48621 + ... + 160741.

It is an arithmetic number, because the mean of its divisors is an integer number (2934288801).

Almost surely, 2^11736938401 is an apocalyptic number.

It is an amenable number.

11736938401 is a deficient number, since it is larger than the sum of its proper divisors (216803).

11736938401 is a wasteful number, since it uses less digits than its factorization.

11736938401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216802.

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 11736938401 in words is "eleven billion, seven hundred thirty-six million, nine hundred thirty-eight thousand, four hundred one".