145403630442555 has 64 divisors (see below), whose sum is σ = 246639354675840. Its totient is φ = 72895527346176.

The previous prime is 145403630442449. The next prime is 145403630442571. The reversal of 145403630442555 is 555244036304541.

It is not a de Polignac number, because 145403630442555 - 2¹¹ = 145403630440507 is a prime.

It is a super-2 number, since 2×145403630442555² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 145403630442498 and 145403630442507.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4344410361 + ... + 4344443829.

It is an arithmetic number, because the mean of its divisors is an integer number (3853739916810).

Almost surely, 2^{145403630442555} is an apocalyptic number.

145403630442555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145403630442555 is a deficient number, since it is larger than the sum of its proper divisors (101235724233285).

145403630442555 is a wasteful number, since it uses less digits than its factorization.

145403630442555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54320.

The product of its (nonzero) digits is 17280000, while the sum is 51.

The spelling of 145403630442555 in words is "one hundred forty-five trillion, four hundred three billion, six hundred thirty million, four hundred forty-two thousand, five hundred fifty-five".