87951569471 has 8 divisors (see below), whose sum is σ = 90136849488. Its totient is φ = 85768200000.

The previous prime is 87951569401. The next prime is 87951569501. The reversal of 87951569471 is 17496515978.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87951569471 - 2²² = 87947375167 is a prime.

It is a super-3 number, since 3×87951569471³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87951569401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 384200 + ... + 568781.

It is an arithmetic number, because the mean of its divisors is an integer number (11267106186).

Almost surely, 2^87951569471 is an apocalyptic number.

87951569471 is a deficient number, since it is larger than the sum of its proper divisors (2185280017).

87951569471 is a wasteful number, since it uses less digits than its factorization.

87951569471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955273.

The product of its digits is 19051200, while the sum is 62.

The spelling of 87951569471 in words is "eighty-seven billion, nine hundred fifty-one million, five hundred sixty-nine thousand, four hundred seventy-one".