1376551770021 has 12 divisors (see below), whose sum is σ = 2093002691520. Its totient is φ = 869401117800.

The previous prime is 1376551769941. The next prime is 1376551770067. The reversal of 1376551770021 is 1200771556731.

1376551770021 is a `hidden beast` number, since 1 + 3 + 7 + 6 + 551 + 7 + 70 + 0 + 21 = 666.

It is not a de Polignac number, because 1376551770021 - 2¹³ = 1376551761829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376551770421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4025005005 + ... + 4025005346.

It is an arithmetic number, because the mean of its divisors is an integer number (174416890960).

Almost surely, 2^{1376551770021} is an apocalyptic number.

It is an amenable number.

1376551770021 is a deficient number, since it is larger than the sum of its proper divisors (716450921499).

1376551770021 is a wasteful number, since it uses less digits than its factorization.

1376551770021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050010376 (or 8050010373 counting only the distinct ones).

The product of its (nonzero) digits is 308700, while the sum is 45.

The spelling of 1376551770021 in words is "one trillion, three hundred seventy-six billion, five hundred fifty-one million, seven hundred seventy thousand, twenty-one".