1986476405401 has 16 divisors (see below), whose sum is σ = 2041472505600. Its totient is φ = 1931882617728.

The previous prime is 1986476405399. The next prime is 1986476405411. The reversal of 1986476405401 is 1045046746891.

It is a cyclic number.

It is not a de Polignac number, because 1986476405401 - 2¹ = 1986476405399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1986476405411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135412695 + ... + 135427363.

It is an arithmetic number, because the mean of its divisors is an integer number (127592031600).

Almost surely, 2^{1986476405401} is an apocalyptic number.

It is an amenable number.

1986476405401 is a deficient number, since it is larger than the sum of its proper divisors (54996100199).

1986476405401 is a wasteful number, since it uses less digits than its factorization.

1986476405401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28128.

The product of its (nonzero) digits is 5806080, while the sum is 55.

The spelling of 1986476405401 in words is "one trillion, nine hundred eighty-six billion, four hundred seventy-six million, four hundred five thousand, four hundred one".