1623144540634 has 16 divisors (see below), whose sum is σ = 2440859495040. Its totient is φ = 809525471680.

The previous prime is 1623144540583. The next prime is 1623144540649. The reversal of 1623144540634 is 4360454413261.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4129797 + ... + 4505719.

It is an arithmetic number, because the mean of its divisors is an integer number (152553718440).

Almost surely, 2^{1623144540634} is an apocalyptic number.

1623144540634 is a deficient number, since it is larger than the sum of its proper divisors (817714954406).

1623144540634 is a wasteful number, since it uses less digits than its factorization.

1623144540634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381365.

The product of its (nonzero) digits is 829440, while the sum is 43.

Adding to 1623144540634 its reverse (4360454413261), we get a palindrome (5983598953895).

The spelling of 1623144540634 in words is "one trillion, six hundred twenty-three billion, one hundred forty-four million, five hundred forty thousand, six hundred thirty-four".