1377335513523 has 16 divisors (see below), whose sum is σ = 1933128369920. Its totient is φ = 869884461216.

The previous prime is 1377335513467. The next prime is 1377335513531. The reversal of 1377335513523 is 3253155337731.

It is not a de Polignac number, because 1377335513523 - 2⁶ = 1377335513459 is a prime.

It is a super-2 number, since 2×1377335513523² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1377335513563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6553986 + ... + 6760872.

It is an arithmetic number, because the mean of its divisors is an integer number (120820523120).

Almost surely, 2^{1377335513523} is an apocalyptic number.

1377335513523 is a deficient number, since it is larger than the sum of its proper divisors (555792856397).

1377335513523 is a wasteful number, since it uses less digits than its factorization.

1377335513523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323706.

The product of its digits is 2976750, while the sum is 48.

The spelling of 1377335513523 in words is "one trillion, three hundred seventy-seven billion, three hundred thirty-five million, five hundred thirteen thousand, five hundred twenty-three".