87780110972 has 12 divisors (see below), whose sum is σ = 160294115856. Its totient is φ = 41981792160.

The previous prime is 87780110953. The next prime is 87780110981. The reversal of 87780110972 is 27901108778.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 87780110972.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477065729 + ... + 477065912.

It is an arithmetic number, because the mean of its divisors is an integer number (13357842988).

Almost surely, 2^87780110972 is an apocalyptic number.

It is an amenable number.

87780110972 is a deficient number, since it is larger than the sum of its proper divisors (72514004884).

87780110972 is a wasteful number, since it uses less digits than its factorization.

87780110972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954131668 (or 954131666 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 50.

The spelling of 87780110972 in words is "eighty-seven billion, seven hundred eighty million, one hundred ten thousand, nine hundred seventy-two".