7157857300145 has 4 divisors (see below), whose sum is σ = 8589428760180. Its totient is φ = 5726285840112.

The previous prime is 7157857300067. The next prime is 7157857300151. The reversal of 7157857300145 is 5410037587517.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3352330297969 + 3805527002176 = 1830937^2 + 1950776^2 .

It is a cyclic number.

It is not a de Polignac number, because 7157857300145 - 2²² = 7157853105841 is a prime.

It is a super-2 number, since 2×7157857300145² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 715785730010 + ... + 715785730019.

It is an arithmetic number, because the mean of its divisors is an integer number (2147357190045).

Almost surely, 2^{7157857300145} is an apocalyptic number.

It is an amenable number.

7157857300145 is a deficient number, since it is larger than the sum of its proper divisors (1431571460035).

7157857300145 is a wasteful number, since it uses less digits than its factorization.

7157857300145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431571460034.

The product of its (nonzero) digits is 4116000, while the sum is 53.

The spelling of 7157857300145 in words is "seven trillion, one hundred fifty-seven billion, eight hundred fifty-seven million, three hundred thousand, one hundred forty-five".