11651440611401 has 4 divisors (see below), whose sum is σ = 11791819414032. Its totient is φ = 11511061808772.

The previous prime is 11651440611397. The next prime is 11651440611431. The reversal of 11651440611401 is 10411604415611.

11651440611401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11651440611401 - 2² = 11651440611397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11651440611431) 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, 70189401191 + ... + 70189401356.

It is an arithmetic number, because the mean of its divisors is an integer number (2947954853508).

Almost surely, 2^{11651440611401} is an apocalyptic number.

It is an amenable number.

11651440611401 is a deficient number, since it is larger than the sum of its proper divisors (140378802631).

11651440611401 is an equidigital number, since it uses as much as digits as its factorization.

11651440611401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140378802630.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 11651440611401 in words is "eleven trillion, six hundred fifty-one billion, four hundred forty million, six hundred eleven thousand, four hundred one".