27570215742442 has 4 divisors (see below), whose sum is σ = 41355323613666. Its totient is φ = 13785107871220.

The previous prime is 27570215742401. The next prime is 27570215742473. The reversal of 27570215742442 is 24424751207572.

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 only one way, i.e., 19069544863161 + 8500670879281 = 4366869^2 + 2915591^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27570215742442.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6892553935609 + ... + 6892553935612.

Almost surely, 2^{27570215742442} is an apocalyptic number.

27570215742442 is a deficient number, since it is larger than the sum of its proper divisors (13785107871224).

27570215742442 is a wasteful number, since it uses less digits than its factorization.

27570215742442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13785107871223.

The product of its (nonzero) digits is 8780800, while the sum is 52.

The spelling of 27570215742442 in words is "twenty-seven trillion, five hundred seventy billion, two hundred fifteen million, seven hundred forty-two thousand, four hundred forty-two".