9387878787942 has 32 divisors (see below), whose sum is σ = 19593296478720. Its totient is φ = 2993053134720.

The previous prime is 9387878787923. The next prime is 9387878787943. The reversal of 9387878787942 is 2497878787839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9387878787943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180967 + ... + 4336877.

It is an arithmetic number, because the mean of its divisors is an integer number (612290514960).

Almost surely, 2^{9387878787942} is an apocalyptic number.

9387878787942 is an abundant number, since it is smaller than the sum of its proper divisors (10205417690778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9387878787942 is a wasteful number, since it uses less digits than its factorization.

9387878787942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4172308.

The product of its digits is 19118260224, while the sum is 87.

The spelling of 9387878787942 in words is "nine trillion, three hundred eighty-seven billion, eight hundred seventy-eight million, seven hundred eighty-seven thousand, nine hundred forty-two".