1477021979861 has 16 divisors (see below), whose sum is σ = 1536141680640. Its totient is φ = 1418449979520.

The previous prime is 1477021979843. The next prime is 1477021979869. The reversal of 1477021979861 is 1689791207741.

It is a cyclic number.

It is not a de Polignac number, because 1477021979861 - 2¹⁰ = 1477021978837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1477021979794 and 1477021979803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1477021979869) 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, 88931420 + ... + 88948026.

It is an arithmetic number, because the mean of its divisors is an integer number (96008855040).

Almost surely, 2^{1477021979861} is an apocalyptic number.

It is an amenable number.

1477021979861 is a deficient number, since it is larger than the sum of its proper divisors (59119700779).

1477021979861 is a wasteful number, since it uses less digits than its factorization.

1477021979861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32884.

The product of its (nonzero) digits is 10668672, while the sum is 62.

The spelling of 1477021979861 in words is "one trillion, four hundred seventy-seven billion, twenty-one million, nine hundred seventy-nine thousand, eight hundred sixty-one".