1667020020370 has 16 divisors (see below), whose sum is σ = 3041740641240. Its totient is φ = 657673651584.

The previous prime is 1667020020361. The next prime is 1667020020461. The reversal of 1667020020370 is 730200207661.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1297432624401 + 369587395969 = 1139049^2 + 607937^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141793805 + ... + 1141795264.

Almost surely, 2^{1667020020370} is an apocalyptic number.

1667020020370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1667020020370 is a deficient number, since it is larger than the sum of its proper divisors (1374720620870).

1667020020370 is a wasteful number, since it uses less digits than its factorization.

1667020020370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2283589149.

The product of its (nonzero) digits is 21168, while the sum is 34.

The spelling of 1667020020370 in words is "one trillion, six hundred sixty-seven billion, twenty million, twenty thousand, three hundred seventy".