87489161077 has 16 divisors (see below), whose sum is σ = 91200893760. Its totient is φ = 83857241088.

The previous prime is 87489161051. The next prime is 87489161101. The reversal of 87489161077 is 77016198478.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87489161077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87489161027) 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, 646933 + ... + 770389.

It is an arithmetic number, because the mean of its divisors is an integer number (5700055860).

Almost surely, 2^87489161077 is an apocalyptic number.

It is an amenable number.

87489161077 is a deficient number, since it is larger than the sum of its proper divisors (3711732683).

87489161077 is a wasteful number, since it uses less digits than its factorization.

87489161077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123780.

The product of its (nonzero) digits is 4741632, while the sum is 58.

The spelling of 87489161077 in words is "eighty-seven billion, four hundred eighty-nine million, one hundred sixty-one thousand, seventy-seven".