145455421451554 has 8 divisors (see below), whose sum is σ = 218184884842860. Its totient is φ = 72727126503936.

The previous prime is 145455421451551. The next prime is 145455421451579. The reversal of 145455421451554 is 455154124554541.

It can be written as a sum of positive squares in 2 ways, for example, as 85883683349025 + 59571738102529 = 9267345^2 + 7718273^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 145455421451495 and 145455421451504.

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 3 ways as a sum of consecutive naturals, for example, 291799639 + ... + 292297690.

Almost surely, 2^{145455421451554} is an apocalyptic number.

145455421451554 is a deficient number, since it is larger than the sum of its proper divisors (72729463391306).

145455421451554 is a wasteful number, since it uses less digits than its factorization.

145455421451554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584221844.

The product of its digits is 32000000, while the sum is 55.

The spelling of 145455421451554 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-four".