87744745028 has 6 divisors (see below), whose sum is σ = 153553303806. Its totient is φ = 43872372512.

The previous prime is 87744745019. The next prime is 87744745069. The reversal of 87744745028 is 82054744778.

It can be written as a sum of positive squares in only one way, i.e., 67526180164 + 20218564864 = 259858^2 + 142192^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10968093125 + ... + 10968093132.

It is an arithmetic number, because the mean of its divisors is an integer number (25592217301).

Almost surely, 2^87744745028 is an apocalyptic number.

It is an amenable number.

87744745028 is a deficient number, since it is larger than the sum of its proper divisors (65808558778).

87744745028 is a wasteful number, since it uses less digits than its factorization.

87744745028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21936186261 (or 21936186259 counting only the distinct ones).

The product of its (nonzero) digits is 14049280, while the sum is 56.

The spelling of 87744745028 in words is "eighty-seven billion, seven hundred forty-four million, seven hundred forty-five thousand, twenty-eight".