1377677235221 has 16 divisors (see below), whose sum is σ = 1645460400384. Its totient is φ = 1127794360704.

The previous prime is 1377677235203. The next prime is 1377677235251. The reversal of 1377677235221 is 1225327767731.

It is a cyclic number.

It is not a de Polignac number, because 1377677235221 - 2³⁸ = 1102799328277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377677235251) 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, 6446936 + ... + 6657201.

It is an arithmetic number, because the mean of its divisors is an integer number (102841275024).

Almost surely, 2^{1377677235221} is an apocalyptic number.

It is an amenable number.

1377677235221 is a deficient number, since it is larger than the sum of its proper divisors (267783165163).

1377677235221 is a wasteful number, since it uses less digits than its factorization.

1377677235221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13104820.

The product of its digits is 5186160, while the sum is 53.

The spelling of 1377677235221 in words is "one trillion, three hundred seventy-seven billion, six hundred seventy-seven million, two hundred thirty-five thousand, two hundred twenty-one".