84770506749 has 16 divisors (see below), whose sum is σ = 122910499008. Its totient is φ = 51751786752.

The previous prime is 84770506747. The next prime is 84770506753. The reversal of 84770506749 is 94760507748.

It is not a de Polignac number, because 84770506749 - 2¹ = 84770506747 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84770506747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22459827 + ... + 22463600.

It is an arithmetic number, because the mean of its divisors is an integer number (7681906188).

Almost surely, 2^84770506749 is an apocalyptic number.

It is an amenable number.

84770506749 is a deficient number, since it is larger than the sum of its proper divisors (38139992259).

84770506749 is a wasteful number, since it uses less digits than its factorization.

84770506749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44923484.

The product of its (nonzero) digits is 11854080, while the sum is 57.

Subtracting 84770506749 from its reverse (94760507748), we obtain a palindrome (9990000999).

The spelling of 84770506749 in words is "eighty-four billion, seven hundred seventy million, five hundred six thousand, seven hundred forty-nine".