87847771077 has 48 divisors (see below), whose sum is σ = 147666516480. Its totient is φ = 51523560000.

The previous prime is 87847771073. The next prime is 87847771127. The reversal of 87847771077 is 77017774878.

87847771077 is a `hidden beast` number, since 87 + 8 + 477 + 7 + 10 + 77 = 666.

It is not a de Polignac number, because 87847771077 - 2² = 87847771073 is a prime.

It is a super-3 number, since 3×87847771077³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87847771073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 332424 + ... + 534977.

It is an arithmetic number, because the mean of its divisors is an integer number (3076385760).

Almost surely, 2^87847771077 is an apocalyptic number.

It is an amenable number.

87847771077 is a deficient number, since it is larger than the sum of its proper divisors (59818745403).

87847771077 is a wasteful number, since it uses less digits than its factorization.

87847771077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867463 (or 867446 counting only the distinct ones).

The product of its (nonzero) digits is 30118144, while the sum is 63.

The spelling of 87847771077 in words is "eighty-seven billion, eight hundred forty-seven million, seven hundred seventy-one thousand, seventy-seven".