87654329641 has 4 divisors (see below), whose sum is σ = 87658002432. Its totient is φ = 87650656852.

The previous prime is 87654329621. The next prime is 87654329647. The reversal of 87654329641 is 14692345678.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87654329641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87654329647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1800361 + ... + 1848406.

It is an arithmetic number, because the mean of its divisors is an integer number (21914500608).

Almost surely, 2^87654329641 is an apocalyptic number.

It is an amenable number.

87654329641 is a deficient number, since it is larger than the sum of its proper divisors (3672791).

87654329641 is a wasteful number, since it uses less digits than its factorization.

87654329641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672790.

The product of its digits is 8709120, while the sum is 55.

The spelling of 87654329641 in words is "eighty-seven billion, six hundred fifty-four million, three hundred twenty-nine thousand, six hundred forty-one".