770215416820 has 48 divisors (see below), whose sum is σ = 1654887225600. Its totient is φ = 300979695744.

The previous prime is 770215416799. The next prime is 770215416847. The reversal of 770215416820 is 28614512077.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234795 + ... + 1263154.

It is an arithmetic number, because the mean of its divisors is an integer number (34476817200).

Almost surely, 2^770215416820 is an apocalyptic number.

It is an amenable number.

770215416820 is an abundant number, since it is smaller than the sum of its proper divisors (884671808780).

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

770215416820 is a wasteful number, since it uses less digits than its factorization.

770215416820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498552 (or 1498550 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 43.

Adding to 770215416820 its reverse (28614512077), we get a palindrome (798829928897).

The spelling of 770215416820 in words is "seven hundred seventy billion, two hundred fifteen million, four hundred sixteen thousand, eight hundred twenty".