11651440611431 has 2 divisors, whose sum is σ = 11651440611432. Its totient is φ = 11651440611430.

The previous prime is 11651440611397. The next prime is 11651440611439. The reversal of 11651440611431 is 13411604415611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11651440611431 - 2²⁶ = 11651373502567 is a prime.

It is a super-2 number, since 2×11651440611431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11651440611439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5825720305715 + 5825720305716.

It is an arithmetic number, because the mean of its divisors is an integer number (5825720305716).

Almost surely, 2^{11651440611431} is an apocalyptic number.

11651440611431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11651440611431 is an equidigital number, since it uses as much as digits as its factorization.

11651440611431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 11651440611431 in words is "eleven trillion, six hundred fifty-one billion, four hundred forty million, six hundred eleven thousand, four hundred thirty-one".