1623265381963 has 8 divisors (see below), whose sum is σ = 1719023262480. Its totient is φ = 1527537688320.

The previous prime is 1623265381943. The next prime is 1623265381979. The reversal of 1623265381963 is 3691835623261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1623265381963 - 2¹³ = 1623265373771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1623265381943) 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, 7435953 + ... + 7651138.

It is an arithmetic number, because the mean of its divisors is an integer number (214877907810).

Almost surely, 2^{1623265381963} is an apocalyptic number.

1623265381963 is a deficient number, since it is larger than the sum of its proper divisors (95757880517).

1623265381963 is a wasteful number, since it uses less digits than its factorization.

1623265381963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15093437.

The product of its digits is 8398080, while the sum is 55.

The spelling of 1623265381963 in words is "one trillion, six hundred twenty-three billion, two hundred sixty-five million, three hundred eighty-one thousand, nine hundred sixty-three".