1020165640608 has 48 divisors (see below), whose sum is σ = 2682405633600. Its totient is φ = 339487489536.

The previous prime is 1020165640601. The next prime is 1020165640609. The reversal of 1020165640608 is 8060465610201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1020165640601) 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, 8812885 + ... + 8927892.

It is an arithmetic number, because the mean of its divisors is an integer number (55883450700).

Almost surely, 2^{1020165640608} is an apocalyptic number.

It is an amenable number.

1020165640608 is an abundant number, since it is smaller than the sum of its proper divisors (1662239992992).

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

1020165640608 is a wasteful number, since it uses less digits than its factorization.

1020165640608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17741389 (or 17741381 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 1020165640608 in words is "one trillion, twenty billion, one hundred sixty-five million, six hundred forty thousand, six hundred eight".