920400259553 has 2 divisors, whose sum is σ = 920400259554. Its totient is φ = 920400259552.

The previous prime is 920400259523. The next prime is 920400259561. The reversal of 920400259553 is 355952004029.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 606236646544 + 314163613009 = 778612^2 + 560503^2 .

It is a cyclic number.

It is not a de Polignac number, because 920400259553 - 2¹⁸ = 920399997409 is a prime.

It is not a weakly prime, because it can be changed into another prime (920400259523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460200129776 + 460200129777.

It is an arithmetic number, because the mean of its divisors is an integer number (460200129777).

Almost surely, 2^920400259553 is an apocalyptic number.

It is an amenable number.

920400259553 is a deficient number, since it is larger than the sum of its proper divisors (1).

920400259553 is an equidigital number, since it uses as much as digits as its factorization.

920400259553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486000, while the sum is 44.

The spelling of 920400259553 in words is "nine hundred twenty billion, four hundred million, two hundred fifty-nine thousand, five hundred fifty-three".