212678554949 has 8 divisors (see below), whose sum is σ = 243070201728. Its totient is φ = 182289157200.

The previous prime is 212678554903. The next prime is 212678554973. The reversal of 212678554949 is 949455876212.

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

It is a cyclic number.

It is not a de Polignac number, because 212678554949 - 2¹² = 212678550853 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212678554891 and 212678554900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212578554949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354497 + ... + 742310.

It is an arithmetic number, because the mean of its divisors is an integer number (30383775216).

Almost surely, 2^212678554949 is an apocalyptic number.

It is an amenable number.

212678554949 is a deficient number, since it is larger than the sum of its proper divisors (30391646779).

212678554949 is a wasteful number, since it uses less digits than its factorization.

212678554949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124515.

The product of its digits is 43545600, while the sum is 62.

The spelling of 212678554949 in words is "two hundred twelve billion, six hundred seventy-eight million, five hundred fifty-four thousand, nine hundred forty-nine".