87809018007 has 8 divisors (see below), whose sum is σ = 117082633984. Its totient is φ = 58537373688.

The previous prime is 87809017999. The next prime is 87809018009. The reversal of 87809018007 is 70081090878.

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

It is not a de Polignac number, because 87809018007 - 2³ = 87809017999 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 (87809018009) 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, 385663 + ... + 569520.

It is an arithmetic number, because the mean of its divisors is an integer number (14635329248).

Almost surely, 2^87809018007 is an apocalyptic number.

87809018007 is a deficient number, since it is larger than the sum of its proper divisors (29273615977).

87809018007 is a wasteful number, since it uses less digits than its factorization.

87809018007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985829.

The product of its (nonzero) digits is 225792, while the sum is 48.

The spelling of 87809018007 in words is "eighty-seven billion, eight hundred nine million, eighteen thousand, seven".