145477621455 has 8 divisors (see below), whose sum is σ = 232764194352. Its totient is φ = 77588064768.

The previous prime is 145477621451. The next prime is 145477621483. The reversal of 145477621455 is 554126774541.

It is a happy number.

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

It is not a de Polignac number, because 145477621455 - 2² = 145477621451 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145477621398 and 145477621407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145477621451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4849254034 + ... + 4849254063.

It is an arithmetic number, because the mean of its divisors is an integer number (29095524294).

Almost surely, 2^145477621455 is an apocalyptic number.

145477621455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145477621455 is a deficient number, since it is larger than the sum of its proper divisors (87286572897).

145477621455 is an equidigital number, since it uses as much as digits as its factorization.

145477621455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9698508105.

The product of its digits is 4704000, while the sum is 51.

The spelling of 145477621455 in words is "one hundred forty-five billion, four hundred seventy-seven million, six hundred twenty-one thousand, four hundred fifty-five".