1078145122571 has 4 divisors (see below), whose sum is σ = 1176158315544. Its totient is φ = 980131929600.

The previous prime is 1078145122567. The next prime is 1078145122573. The reversal of 1078145122571 is 1752215418701.

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

It is a cyclic number.

It is not a de Polignac number, because 1078145122571 - 2² = 1078145122567 is a prime.

It is a super-2 number, since 2×1078145122571² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1078145122573) 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, 49006596470 + ... + 49006596491.

It is an arithmetic number, because the mean of its divisors is an integer number (294039578886).

Almost surely, 2^{1078145122571} is an apocalyptic number.

1078145122571 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1078145122571 is a deficient number, since it is larger than the sum of its proper divisors (98013192973).

1078145122571 is an equidigital number, since it uses as much as digits as its factorization.

1078145122571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98013192972.

The product of its (nonzero) digits is 156800, while the sum is 44.

The spelling of 1078145122571 in words is "one trillion, seventy-eight billion, one hundred forty-five million, one hundred twenty-two thousand, five hundred seventy-one".