1376777394431 has 8 divisors (see below), whose sum is σ = 1383782400000. Its totient is φ = 1369773254520.

The previous prime is 1376777394407. The next prime is 1376777394497. The reversal of 1376777394431 is 1344937776731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1376777394431 is a prime.

It is a super-2 number, since 2×1376777394431² (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 (1376777394631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3101570 + ... + 3517568.

It is an arithmetic number, because the mean of its divisors is an integer number (172972800000).

Almost surely, 2^{1376777394431} is an apocalyptic number.

1376777394431 is a deficient number, since it is larger than the sum of its proper divisors (7005005569).

1376777394431 is a wasteful number, since it uses less digits than its factorization.

1376777394431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432829.

The product of its digits is 56010528, while the sum is 62.

The spelling of 1376777394431 in words is "one trillion, three hundred seventy-six billion, seven hundred seventy-seven million, three hundred ninety-four thousand, four hundred thirty-one".