1623562704397 has 2 divisors, whose sum is σ = 1623562704398. Its totient is φ = 1623562704396.

The previous prime is 1623562704371. The next prime is 1623562704503. The reversal of 1623562704397 is 7934072653261.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1518738281641 + 104824422756 = 1232371^2 + 323766^2 .

It is a cyclic number.

It is not a de Polignac number, because 1623562704397 - 2¹⁵ = 1623562671629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1623562702397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811781352198 + 811781352199.

It is an arithmetic number, because the mean of its divisors is an integer number (811781352199).

Almost surely, 2^{1623562704397} is an apocalyptic number.

It is an amenable number.

1623562704397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623562704397 is an equidigital number, since it uses as much as digits as its factorization.

1623562704397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 55.

The spelling of 1623562704397 in words is "one trillion, six hundred twenty-three billion, five hundred sixty-two million, seven hundred four thousand, three hundred ninety-seven".