1377948681636 has 12 divisors (see below), whose sum is σ = 3215213590512. Its totient is φ = 459316227208.

The previous prime is 1377948681619. The next prime is 1377948681689. The reversal of 1377948681636 is 6361868497731.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×1377948681636³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57414528390 + ... + 57414528413.

It is an arithmetic number, because the mean of its divisors is an integer number (267934465876).

Almost surely, 2^{1377948681636} is an apocalyptic number.

It is an amenable number.

1377948681636 is an abundant number, since it is smaller than the sum of its proper divisors (1837264908876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1377948681636 is a wasteful number, since it uses less digits than its factorization.

1377948681636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114829056810 (or 114829056808 counting only the distinct ones).

The product of its digits is 219469824, while the sum is 69.

The spelling of 1377948681636 in words is "one trillion, three hundred seventy-seven billion, nine hundred forty-eight million, six hundred eighty-one thousand, six hundred thirty-six".