1377520415137 has 4 divisors (see below), whose sum is σ = 1403511366420. Its totient is φ = 1351529463856.

The previous prime is 1377520415087. The next prime is 1377520415143. The reversal of 1377520415137 is 7315140257731.

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

It can be written as a sum of positive squares in 2 ways, for example, as 891166208256 + 486354206881 = 944016^2 + 697391^2 .

It is a cyclic number.

It is not a de Polignac number, because 1377520415137 - 2⁷ = 1377520415009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1377520418137) 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, 12995475562 + ... + 12995475667.

It is an arithmetic number, because the mean of its divisors is an integer number (350877841605).

Almost surely, 2^{1377520415137} is an apocalyptic number.

It is an amenable number.

1377520415137 is a deficient number, since it is larger than the sum of its proper divisors (25990951283).

1377520415137 is an equidigital number, since it uses as much as digits as its factorization.

1377520415137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25990951282.

The product of its (nonzero) digits is 617400, while the sum is 46.

The spelling of 1377520415137 in words is "one trillion, three hundred seventy-seven billion, five hundred twenty million, four hundred fifteen thousand, one hundred thirty-seven".