11878635487654 has 16 divisors (see below), whose sum is σ = 19188852207840. Its totient is φ = 5482365094080.

The previous prime is 11878635487639. The next prime is 11878635487657. The reversal of 11878635487654 is 45678453687811.

It is a super-2 number, since 2×11878635487654² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11878635487657) 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 7 ways as a sum of consecutive naturals, for example, 1630674 + ... + 5139685.

It is an arithmetic number, because the mean of its divisors is an integer number (1199303262990).

Almost surely, 2^{11878635487654} is an apocalyptic number.

11878635487654 is a deficient number, since it is larger than the sum of its proper divisors (7310216720186).

11878635487654 is a wasteful number, since it uses less digits than its factorization.

11878635487654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6837855.

The product of its digits is 1083801600, while the sum is 73.

The spelling of 11878635487654 in words is "eleven trillion, eight hundred seventy-eight billion, six hundred thirty-five million, four hundred eighty-seven thousand, six hundred fifty-four".