87472541477 has 4 divisors (see below), whose sum is σ = 87477743136. Its totient is φ = 87467339820.

The previous prime is 87472541473. The next prime is 87472541479. The reversal of 87472541477 is 77414527478.

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 a cyclic number.

It is not a de Polignac number, because 87472541477 - 2² = 87472541473 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 (87472541473) 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, 2575523 + ... + 2609264.

It is an arithmetic number, because the mean of its divisors is an integer number (21869435784).

Almost surely, 2^87472541477 is an apocalyptic number.

It is an amenable number.

87472541477 is a deficient number, since it is larger than the sum of its proper divisors (5201659).

87472541477 is a wasteful number, since it uses less digits than its factorization.

87472541477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5201658.

The product of its digits is 12293120, while the sum is 56.

The spelling of 87472541477 in words is "eighty-seven billion, four hundred seventy-two million, five hundred forty-one thousand, four hundred seventy-seven".