1121392045764 has 45 divisors (see below), whose sum is σ = 2931590147871. Its totient is φ = 373790994840.

The previous prime is 1121392045727. The next prime is 1121392045777. The reversal of 1121392045764 is 4675402931211.

The square root of 1121392045764 is 1058958.

It is a perfect power (a square), and thus also a powerful number.

1121392045764 is a `hidden beast` number, since 1 + 1 + 2 + 139 + 2 + 0 + 457 + 64 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 19031829 + ... + 19090659.

Almost surely, 2^{1121392045764} is an apocalyptic number.

1121392045764 is the 1058958-th square number.

It is an amenable number.

1121392045764 is an abundant number, since it is smaller than the sum of its proper divisors (1810198102107).

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

1121392045764 is an frugal number, since it uses more digits than its factorization.

1121392045764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117678 (or 58836 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

Adding to 1121392045764 its reverse (4675402931211), we get a palindrome (5796794976975).

The spelling of 1121392045764 in words is "one trillion, one hundred twenty-one billion, three hundred ninety-two million, forty-five thousand, seven hundred sixty-four".