1623144640634 has 64 divisors (see below), whose sum is σ = 2773391177088. Its totient is φ = 705906739200.

The previous prime is 1623144640633. The next prime is 1623144640651. The reversal of 1623144640634 is 4360464413261.

It is not an unprimeable number, because it can be changed into a prime (1623144640633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133994162 + ... + 134006274.

It is an arithmetic number, because the mean of its divisors is an integer number (43334237142).

Almost surely, 2^{1623144640634} is an apocalyptic number.

1623144640634 is a deficient number, since it is larger than the sum of its proper divisors (1150246536454).

1623144640634 is a wasteful number, since it uses less digits than its factorization.

1623144640634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15023.

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 1623144640634 in words is "one trillion, six hundred twenty-three billion, one hundred forty-four million, six hundred forty thousand, six hundred thirty-four".