1377338629428 has 144 divisors (see below), whose sum is σ = 3917464387200. Its totient is φ = 405890749440.

The previous prime is 1377338629423. The next prime is 1377338629487. The reversal of 1377338629428 is 8249268337731.

1377338629428 is a `hidden beast` number, since 1 + 3 + 7 + 7 + 338 + 6 + 294 + 2 + 8 = 666.

It is a super-2 number, since 2×1377338629428² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377338629423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 422673 + ... + 1712696.

It is an arithmetic number, because the mean of its divisors is an integer number (27204613800).

Almost surely, 2^{1377338629428} is an apocalyptic number.

1377338629428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1377338629428 is an abundant number, since it is smaller than the sum of its proper divisors (2540125757772).

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

1377338629428 is a wasteful number, since it uses less digits than its factorization.

1377338629428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135462 (or 2135457 counting only the distinct ones).

The product of its digits is 73156608, while the sum is 63.

The spelling of 1377338629428 in words is "one trillion, three hundred seventy-seven billion, three hundred thirty-eight million, six hundred twenty-nine thousand, four hundred twenty-eight".