27515370450157 has 4 divisors (see below), whose sum is σ = 27863666278720. Its totient is φ = 27167074621596.

The previous prime is 27515370450131. The next prime is 27515370450203. The reversal of 27515370450157 is 75105407351572.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27515370450157 - 2¹⁵ = 27515370417389 is a prime.

It is a super-2 number, since 2×27515370450157² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27515370400157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174147914163 + ... + 174147914320.

It is an arithmetic number, because the mean of its divisors is an integer number (6965916569680).

Almost surely, 2^{27515370450157} is an apocalyptic number.

It is an amenable number.

27515370450157 is a deficient number, since it is larger than the sum of its proper divisors (348295828563).

27515370450157 is an equidigital number, since it uses as much as digits as its factorization.

27515370450157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348295828562.

The product of its (nonzero) digits is 5145000, while the sum is 52.

The spelling of 27515370450157 in words is "twenty-seven trillion, five hundred fifteen billion, three hundred seventy million, four hundred fifty thousand, one hundred fifty-seven".