1391496617623 has 16 divisors (see below), whose sum is σ = 1645159752000. Its totient is φ = 1151554989312.

The previous prime is 1391496617603. The next prime is 1391496617627. The reversal of 1391496617623 is 3267166941931.

It is not a de Polignac number, because 1391496617623 - 2⁵ = 1391496617591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1391496617627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13608733 + ... + 13710601.

It is an arithmetic number, because the mean of its divisors is an integer number (102822484500).

Almost surely, 2^{1391496617623} is an apocalyptic number.

1391496617623 is a deficient number, since it is larger than the sum of its proper divisors (253663134377).

1391496617623 is a wasteful number, since it uses less digits than its factorization.

1391496617623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169194.

The product of its digits is 8817984, while the sum is 58.

The spelling of 1391496617623 in words is "one trillion, three hundred ninety-one billion, four hundred ninety-six million, six hundred seventeen thousand, six hundred twenty-three".