102444143426446 has 4 divisors (see below), whose sum is σ = 153666215139672. Its totient is φ = 51222071713222.

The previous prime is 102444143426399. The next prime is 102444143426483. The reversal of 102444143426446 is 644624341444201.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 102444143426446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25611035856610 + ... + 25611035856613.

It is an arithmetic number, because the mean of its divisors is an integer number (38416553784918).

Almost surely, 2^{102444143426446} is an apocalyptic number.

102444143426446 is a deficient number, since it is larger than the sum of its proper divisors (51222071713226).

102444143426446 is an equidigital number, since it uses as much as digits as its factorization.

102444143426446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51222071713225.

The product of its (nonzero) digits is 7077888, while the sum is 49.

The spelling of 102444143426446 in words is "one hundred two trillion, four hundred forty-four billion, one hundred forty-three million, four hundred twenty-six thousand, four hundred forty-six".