88149221639 has 4 divisors (see below), whose sum is σ = 88181501640. Its totient is φ = 88116941640.

The previous prime is 88149221621. The next prime is 88149221651. The reversal of 88149221639 is 93612294188.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 88149221639 - 2¹² = 88149217543 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 (88149221659) 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, 16135904 + ... + 16141365.

It is an arithmetic number, because the mean of its divisors is an integer number (22045375410).

Almost surely, 2^88149221639 is an apocalyptic number.

88149221639 is a deficient number, since it is larger than the sum of its proper divisors (32280001).

88149221639 is a wasteful number, since it uses less digits than its factorization.

88149221639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32280000.

The product of its digits is 1492992, while the sum is 53.

The spelling of 88149221639 in words is "eighty-eight billion, one hundred forty-nine million, two hundred twenty-one thousand, six hundred thirty-nine".