145620674557857 has 36 divisors (see below), whose sum is σ = 215709546220740. Its totient is φ = 94662854931456.

The previous prime is 145620674557849. The next prime is 145620674557861. The reversal of 145620674557857 is 758755476026541.

145620674557857 is a `hidden beast` number, since 1 + 4 + 5 + 6 + 2 + 0 + 6 + 7 + 45 + 578 + 5 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 39501338130081 + 106119336427776 = 6285009^2 + 10301424^2 .

It is not a de Polignac number, because 145620674557857 - 2³ = 145620674557849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145620674557807) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2489769 + ... + 17246457.

It is an arithmetic number, because the mean of its divisors is an integer number (5991931839465).

Almost surely, 2^{145620674557857} is an apocalyptic number.

It is an amenable number.

145620674557857 is a deficient number, since it is larger than the sum of its proper divisors (70088871662883).

145620674557857 is a wasteful number, since it uses less digits than its factorization.

145620674557857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14757374 (or 14757328 counting only the distinct ones).

The product of its (nonzero) digits is 1975680000, while the sum is 72.

The spelling of 145620674557857 in words is "one hundred forty-five trillion, six hundred twenty billion, six hundred seventy-four million, five hundred fifty-seven thousand, eight hundred fifty-seven".