101223857639 has 8 divisors (see below), whose sum is σ = 107193929040. Its totient is φ = 95255533696.

The previous prime is 101223857633. The next prime is 101223857641. The reversal of 101223857639 is 936758322101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 101223857639 - 2¹² = 101223853543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101223857593 and 101223857602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101223857633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316649 + ... + 550194.

It is an arithmetic number, because the mean of its divisors is an integer number (13399241130).

Almost surely, 2^101223857639 is an apocalyptic number.

101223857639 is a deficient number, since it is larger than the sum of its proper divisors (5970071401).

101223857639 is an equidigital number, since it uses as much as digits as its factorization.

101223857639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873729.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 101223857639 in words is "one hundred one billion, two hundred twenty-three million, eight hundred fifty-seven thousand, six hundred thirty-nine".