1377374217657 has 32 divisors (see below), whose sum is σ = 1876297737600. Its totient is φ = 898497380352.

The previous prime is 1377374217589. The next prime is 1377374217671. The reversal of 1377374217657 is 7567124737731.

It is not a de Polignac number, because 1377374217657 - 2⁷ = 1377374217529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1377374217657.

It is not an unprimeable number, because it can be changed into a prime (1377374217257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205912969 + ... + 205919657.

It is an arithmetic number, because the mean of its divisors is an integer number (58634304300).

Almost surely, 2^{1377374217657} is an apocalyptic number.

It is an amenable number.

1377374217657 is a deficient number, since it is larger than the sum of its proper divisors (498923519943).

1377374217657 is a wasteful number, since it uses less digits than its factorization.

1377374217657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11977.

The product of its digits is 36303120, while the sum is 60.

The spelling of 1377374217657 in words is "one trillion, three hundred seventy-seven billion, three hundred seventy-four million, two hundred seventeen thousand, six hundred fifty-seven".