1640401023170 has 48 divisors (see below), whose sum is σ = 3654086904000. Its totient is φ = 519159880512.

The previous prime is 1640401023077. The next prime is 1640401023203. The reversal of 1640401023170 is 713201040461.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69320420 + ... + 69344079.

It is an arithmetic number, because the mean of its divisors is an integer number (76126810500).

Almost surely, 2^{1640401023170} is an apocalyptic number.

1640401023170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1640401023170 is an abundant number, since it is smaller than the sum of its proper divisors (2013685880830).

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

1640401023170 is a wasteful number, since it uses less digits than its factorization.

1640401023170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138664539 (or 138664526 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The spelling of 1640401023170 in words is "one trillion, six hundred forty billion, four hundred one million, twenty-three thousand, one hundred seventy".