145455421451553 has 8 divisors (see below), whose sum is σ = 215489513261600. Its totient is φ = 96970280967684.

The previous prime is 145455421451551. The next prime is 145455421451579. The reversal of 145455421451553 is 355154124554541.

It is a happy number.

145455421451553 is a `hidden beast` number, since 1 + 4 + 5 + 4 + 5 + 5 + 42 + 1 + 45 + 1 + 553 = 666.

It is not a de Polignac number, because 145455421451553 - 2¹ = 145455421451551 is a prime.

It is a super-2 number, since 2×145455421451553² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145455421451553.

It is not an unprimeable number, because it can be changed into a prime (145455421451551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2693618915743 + ... + 2693618915796.

It is an arithmetic number, because the mean of its divisors is an integer number (26936189157700).

Almost surely, 2^{145455421451553} is an apocalyptic number.

It is an amenable number.

145455421451553 is a deficient number, since it is larger than the sum of its proper divisors (70034091810047).

145455421451553 is an equidigital number, since it uses as much as digits as its factorization.

145455421451553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5387237831548 (or 5387237831542 counting only the distinct ones).

The product of its digits is 24000000, while the sum is 54.

The spelling of 145455421451553 in words is "one hundred forty-five trillion, four hundred fifty-five billion, four hundred twenty-one million, four hundred fifty-one thousand, five hundred fifty-three".