1662665401290 has 64 divisors (see below), whose sum is σ = 3994729850880. Its totient is φ = 442896276480.

The previous prime is 1662665401279. The next prime is 1662665401301. The reversal of 1662665401290 is 921045662661.

It is an interprime number because it is at equal distance from previous prime (1662665401279) and next prime (1662665401301).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136311472 + ... + 136323668.

It is an arithmetic number, because the mean of its divisors is an integer number (62417653920).

Almost surely, 2^{1662665401290} is an apocalyptic number.

1662665401290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1662665401290 is an abundant number, since it is smaller than the sum of its proper divisors (2332064449590).

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

1662665401290 is a wasteful number, since it uses less digits than its factorization.

1662665401290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16767.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 1662665401290 in words is "one trillion, six hundred sixty-two billion, six hundred sixty-five million, four hundred one thousand, two hundred ninety".