11618142987 has 16 divisors (see below), whose sum is σ = 16938165888. Its totient is φ = 7025028480.

The previous prime is 11618142983. The next prime is 11618143081. The reversal of 11618142987 is 78924181611.

It is not a de Polignac number, because 11618142987 - 2² = 11618142983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11618142983) by changing a digit.

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, 392253 + ... + 420830.

It is an arithmetic number, because the mean of its divisors is an integer number (1058635368).

Almost surely, 2^11618142987 is an apocalyptic number.

11618142987 is a deficient number, since it is larger than the sum of its proper divisors (5320022901).

11618142987 is a wasteful number, since it uses less digits than its factorization.

11618142987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813530.

The product of its digits is 193536, while the sum is 48.

The spelling of 11618142987 in words is "eleven billion, six hundred eighteen million, one hundred forty-two thousand, nine hundred eighty-seven".