11601431511465 has 16 divisors (see below), whose sum is σ = 18562786800768. Its totient is φ = 6187264678656.

The previous prime is 11601431511451. The next prime is 11601431511511. The reversal of 11601431511465 is 56411513410611.

It is not a de Polignac number, because 11601431511465 - 2⁷ = 11601431511337 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9760624 + ... + 10884513.

It is an arithmetic number, because the mean of its divisors is an integer number (1160174175048).

Almost surely, 2^{11601431511465} is an apocalyptic number.

11601431511465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11601431511465 is a deficient number, since it is larger than the sum of its proper divisors (6961355289303).

11601431511465 is a wasteful number, since it uses less digits than its factorization.

11601431511465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20682608.

The product of its (nonzero) digits is 43200, while the sum is 39.

The spelling of 11601431511465 in words is "eleven trillion, six hundred one billion, four hundred thirty-one million, five hundred eleven thousand, four hundred sixty-five".