1021360551664 has 20 divisors (see below), whose sum is σ = 1978901806960. Its totient is φ = 510676214400.

The previous prime is 1021360551587. The next prime is 1021360551721. The reversal of 1021360551664 is 4661550631201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3530452 + ... + 3808780.

It is an arithmetic number, because the mean of its divisors is an integer number (98945090348).

Almost surely, 2^{1021360551664} is an apocalyptic number.

It is an amenable number.

1021360551664 is a deficient number, since it is larger than the sum of its proper divisors (957541255296).

1021360551664 is a wasteful number, since it uses less digits than its factorization.

1021360551664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507688 (or 507682 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 1021360551664 in words is "one trillion, twenty-one billion, three hundred sixty million, five hundred fifty-one thousand, six hundred sixty-four".