1623455417953 has 6 divisors (see below), whose sum is σ = 1654664602934. Its totient is φ = 1592824180896.

The previous prime is 1623455417951. The next prime is 1623455418029. The reversal of 1623455417953 is 3597145543261.

It can be written as a sum of positive squares in 3 ways, for example, as 1038395646289 + 585059771664 = 1019017^2 + 764892^2 .

It is not a de Polignac number, because 1623455417953 - 2¹ = 1623455417951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1623455417894 and 1623455417903.

It is not an unprimeable number, because it can be changed into a prime (1623455417951) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288971100 + ... + 288976717.

Almost surely, 2^{1623455417953} is an apocalyptic number.

It is an amenable number.

1623455417953 is a deficient number, since it is larger than the sum of its proper divisors (31209184981).

1623455417953 is an frugal number, since it uses more digits than its factorization.

1623455417953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577947923 (or 577947870 counting only the distinct ones).

The product of its digits is 13608000, while the sum is 55.

The spelling of 1623455417953 in words is "one trillion, six hundred twenty-three billion, four hundred fifty-five million, four hundred seventeen thousand, nine hundred fifty-three".