1377323051537 has 4 divisors (see below), whose sum is σ = 1449813738480. Its totient is φ = 1304832364596.

The previous prime is 1377323051521. The next prime is 1377323051623. The reversal of 1377323051537 is 7351503237731.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1377323051537 - 2⁴ = 1377323051521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1377323051491 and 1377323051500.

It is not an unprimeable number, because it can be changed into a prime (1377323054537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36245343443 + ... + 36245343480.

It is an arithmetic number, because the mean of its divisors is an integer number (362453434620).

Almost surely, 2^{1377323051537} is an apocalyptic number.

It is an amenable number.

1377323051537 is a deficient number, since it is larger than the sum of its proper divisors (72490686943).

1377323051537 is an equidigital number, since it uses as much as digits as its factorization.

1377323051537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72490686942.

The product of its (nonzero) digits is 1389150, while the sum is 47.

The spelling of 1377323051537 in words is "one trillion, three hundred seventy-seven billion, three hundred twenty-three million, fifty-one thousand, five hundred thirty-seven".