105451390812 has 24 divisors (see below), whose sum is σ = 246144015376. Its totient is φ = 35137496448.

The previous prime is 105451390783. The next prime is 105451390871. The reversal of 105451390812 is 218093154501.

It is a super-2 number, since 2×105451390812² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1586983 + ... + 1652094.

Almost surely, 2^105451390812 is an apocalyptic number.

105451390812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

105451390812 is an abundant number, since it is smaller than the sum of its proper divisors (140692624564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

105451390812 is a wasteful number, since it uses less digits than its factorization.

105451390812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3241797 (or 3241795 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 39.

The spelling of 105451390812 in words is "one hundred five billion, four hundred fifty-one million, three hundred ninety thousand, eight hundred twelve".