87837621049 has 4 divisors (see below), whose sum is σ = 87849755536. Its totient is φ = 87825486564.

The previous prime is 87837621037. The next prime is 87837621071. The reversal of 87837621049 is 94012673878.

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 87837621049 - 2⁹ = 87837620537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87837621019) 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, 6056379 + ... + 6070864.

It is an arithmetic number, because the mean of its divisors is an integer number (21962438884).

Almost surely, 2^87837621049 is an apocalyptic number.

It is an amenable number.

87837621049 is a deficient number, since it is larger than the sum of its proper divisors (12134487).

87837621049 is a wasteful number, since it uses less digits than its factorization.

87837621049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12134486.

The product of its (nonzero) digits is 4064256, while the sum is 55.

The spelling of 87837621049 in words is "eighty-seven billion, eight hundred thirty-seven million, six hundred twenty-one thousand, forty-nine".