87780047641 has 16 divisors (see below), whose sum is σ = 103138721280. Its totient is φ = 73652641920.

The previous prime is 87780047623. The next prime is 87780047681. The reversal of 87780047641 is 14674008778.

It is not a de Polignac number, because 87780047641 - 2¹³ = 87780039449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87780047681) 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, 1317261 + ... + 1382293.

It is an arithmetic number, because the mean of its divisors is an integer number (6446170080).

Almost surely, 2^87780047641 is an apocalyptic number.

It is an amenable number.

87780047641 is a deficient number, since it is larger than the sum of its proper divisors (15358673639).

87780047641 is a wasteful number, since it uses less digits than its factorization.

87780047641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74496.

The product of its (nonzero) digits is 2107392, while the sum is 52.

The spelling of 87780047641 in words is "eighty-seven billion, seven hundred eighty million, forty-seven thousand, six hundred forty-one".