87320124785 has 16 divisors (see below), whose sum is σ = 106745040000. Its totient is φ = 68552948736.

The previous prime is 87320124757. The next prime is 87320124839. The reversal of 87320124785 is 58742102378.

It is a cyclic number.

It is not a de Polignac number, because 87320124785 - 2⁶ = 87320124721 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86285 + ... + 426714.

It is an arithmetic number, because the mean of its divisors is an integer number (6671565000).

Almost surely, 2^87320124785 is an apocalyptic number.

It is an amenable number.

87320124785 is a deficient number, since it is larger than the sum of its proper divisors (19424915215).

87320124785 is a wasteful number, since it uses less digits than its factorization.

87320124785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513640.

The product of its (nonzero) digits is 752640, while the sum is 47.

The spelling of 87320124785 in words is "eighty-seven billion, three hundred twenty million, one hundred twenty-four thousand, seven hundred eighty-five".