1427161778485 has 16 divisors (see below), whose sum is σ = 1802760134400. Its totient is φ = 1081620720576.

The previous prime is 1427161778473. The next prime is 1427161778543. The reversal of 1427161778485 is 5848771617241.

It is a cyclic number.

It is not a de Polignac number, because 1427161778485 - 2⁵ = 1427161778453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10915972 + ... + 11045938.

It is an arithmetic number, because the mean of its divisors is an integer number (112672508400).

Almost surely, 2^{1427161778485} is an apocalyptic number.

It is an amenable number.

1427161778485 is a deficient number, since it is larger than the sum of its proper divisors (375598355915).

1427161778485 is a wasteful number, since it uses less digits than its factorization.

1427161778485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245580.

The product of its digits is 21073920, while the sum is 61.

The spelling of 1427161778485 in words is "one trillion, four hundred twenty-seven billion, one hundred sixty-one million, seven hundred seventy-eight thousand, four hundred eighty-five".