1377375006646 has 4 divisors (see below), whose sum is σ = 2066062509972. Its totient is φ = 688687503322.

The previous prime is 1377375006643. The next prime is 1377375006703. The reversal of 1377375006646 is 6466005737731.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377375006641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 344343751660 + ... + 344343751663.

It is an arithmetic number, because the mean of its divisors is an integer number (516515627493).

Almost surely, 2^{1377375006646} is an apocalyptic number.

1377375006646 is a deficient number, since it is larger than the sum of its proper divisors (688687503326).

1377375006646 is an equidigital number, since it uses as much as digits as its factorization.

1377375006646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688687503325.

The product of its (nonzero) digits is 13335840, while the sum is 55.

The spelling of 1377375006646 in words is "one trillion, three hundred seventy-seven billion, three hundred seventy-five million, six thousand, six hundred forty-six".