1192477797421 has 8 divisors (see below), whose sum is σ = 1233815956920. Its totient is φ = 1151154187008.

The previous prime is 1192477797419. The next prime is 1192477797437. The reversal of 1192477797421 is 1247977742911.

It can be written as a sum of positive squares in 4 ways, for example, as 333910622500 + 858567174921 = 577850^2 + 926589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1192477797421 - 2¹ = 1192477797419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1192477797421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1192477797461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3470376 + ... + 3798481.

It is an arithmetic number, because the mean of its divisors is an integer number (154226994615).

Almost surely, 2^{1192477797421} is an apocalyptic number.

It is an amenable number.

1192477797421 is a deficient number, since it is larger than the sum of its proper divisors (41338159499).

1192477797421 is an equidigital number, since it uses as much as digits as its factorization.

1192477797421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7274543.

The product of its digits is 12446784, while the sum is 61.

The spelling of 1192477797421 in words is "one trillion, one hundred ninety-two billion, four hundred seventy-seven million, seven hundred ninety-seven thousand, four hundred twenty-one".