873817540477 has 4 divisors (see below), whose sum is σ = 998648617696. Its totient is φ = 748986463260.

The previous prime is 873817540469. The next prime is 873817540559. The reversal of 873817540477 is 774045718378.

It is a happy number.

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 not a de Polignac number, because 873817540477 - 2³ = 873817540469 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 (873817540457) 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, 62415538599 + ... + 62415538612.

It is an arithmetic number, because the mean of its divisors is an integer number (249662154424).

Almost surely, 2^873817540477 is an apocalyptic number.

It is an amenable number.

873817540477 is a deficient number, since it is larger than the sum of its proper divisors (124831077219).

873817540477 is a wasteful number, since it uses less digits than its factorization.

873817540477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124831077218.

The product of its (nonzero) digits is 36879360, while the sum is 61.

The spelling of 873817540477 in words is "eight hundred seventy-three billion, eight hundred seventeen million, five hundred forty thousand, four hundred seventy-seven".