766434221370 has 96 divisors (see below), whose sum is σ = 2102389660800. Its totient is φ = 193184237952.

The previous prime is 766434221369. The next prime is 766434221431. The reversal of 766434221370 is 73122434667.

766434221370 is a `hidden beast` number, since 7 + 66 + 434 + 22 + 137 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 240204 + ... + 1261176.

It is an arithmetic number, because the mean of its divisors is an integer number (21899892300).

Almost surely, 2^766434221370 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 766434221370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1051194830400).

766434221370 is an abundant number, since it is smaller than the sum of its proper divisors (1335955439430).

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

766434221370 is a wasteful number, since it uses less digits than its factorization.

766434221370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021444 (or 1021441 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 45.

The spelling of 766434221370 in words is "seven hundred sixty-six billion, four hundred thirty-four million, two hundred twenty-one thousand, three hundred seventy".