87223642957 has 4 divisors (see below), whose sum is σ = 95153065056. Its totient is φ = 79294220860.

The previous prime is 87223642951. The next prime is 87223642981. The reversal of 87223642957 is 75924632278.

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 87223642957 - 2²⁷ = 87089425229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87223642898 and 87223642907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87223642951) 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, 3964711033 + ... + 3964711054.

It is an arithmetic number, because the mean of its divisors is an integer number (23788266264).

Almost surely, 2^87223642957 is an apocalyptic number.

It is an amenable number.

87223642957 is a deficient number, since it is larger than the sum of its proper divisors (7929422099).

87223642957 is a wasteful number, since it uses less digits than its factorization.

87223642957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7929422098.

The product of its digits is 10160640, while the sum is 55.

The spelling of 87223642957 in words is "eighty-seven billion, two hundred twenty-three million, six hundred forty-two thousand, nine hundred fifty-seven".