1640707434570 has 32 divisors (see below), whose sum is σ = 3937819017600. Its totient is φ = 437508518720.

The previous prime is 1640707434503. The next prime is 1640707434571. The reversal of 1640707434570 is 754347070461.

It is not an unprimeable number, because it can be changed into a prime (1640707434571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169555 + ... + 1819385.

It is an arithmetic number, because the mean of its divisors is an integer number (123056844300).

Almost surely, 2^{1640707434570} is an apocalyptic number.

1640707434570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1640707434570 is an abundant number, since it is smaller than the sum of its proper divisors (2297111583030).

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

1640707434570 is a wasteful number, since it uses less digits than its factorization.

1640707434570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682990.

The product of its (nonzero) digits is 1975680, while the sum is 48.

The spelling of 1640707434570 in words is "one trillion, six hundred forty billion, seven hundred seven million, four hundred thirty-four thousand, five hundred seventy".