1427986077381 has 6 divisors (see below), whose sum is σ = 2062646556230. Its totient is φ = 951990718248.

The previous prime is 1427986077377. The next prime is 1427986077431. The reversal of 1427986077381 is 1837706897241.

1427986077381 is a `hidden beast` number, since 1 + 42 + 7 + 98 + 60 + 77 + 381 = 666.

It can be written as a sum of positive squares in only one way, i.e., 800470196100 + 627515881281 = 894690^2 + 792159^2 .

It is not a de Polignac number, because 1427986077381 - 2² = 1427986077377 is a prime.

It is a super-2 number, since 2×1427986077381² (a number of 25 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 (1427986077181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79332559846 + ... + 79332559863.

Almost surely, 2^{1427986077381} is an apocalyptic number.

It is an amenable number.

1427986077381 is a deficient number, since it is larger than the sum of its proper divisors (634660478849).

1427986077381 is a wasteful number, since it uses less digits than its factorization.

1427986077381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158665119715 (or 158665119712 counting only the distinct ones).

The product of its (nonzero) digits is 28449792, while the sum is 63.

The spelling of 1427986077381 in words is "one trillion, four hundred twenty-seven billion, nine hundred eighty-six million, seventy-seven thousand, three hundred eighty-one".