64155010770 has 128 divisors (see below), whose sum is σ = 177875239680. Its totient is φ = 16645414464.

The previous prime is 64155010757. The next prime is 64155010789. The reversal of 64155010770 is 7701055146.

64155010770 is a `hidden beast` number, since 641 + 5 + 5 + 0 + 1 + 0 + 7 + 7 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 769549 + ... + 848831.

It is an arithmetic number, because the mean of its divisors is an integer number (1389650310).

Almost surely, 2^64155010770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64155010770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88937619840).

64155010770 is an abundant number, since it is smaller than the sum of its proper divisors (113720228910).

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

64155010770 is an equidigital number, since it uses as much as digits as its factorization.

64155010770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79348 (or 79330 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The spelling of 64155010770 in words is "sixty-four billion, one hundred fifty-five million, ten thousand, seven hundred seventy".