1177421783421 has 32 divisors (see below), whose sum is σ = 1700455680000. Its totient is φ = 720373376448.

The previous prime is 1177421783411. The next prime is 1177421783423. The reversal of 1177421783421 is 1243871247711.

It is not a de Polignac number, because 1177421783421 - 2¹⁵ = 1177421750653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1177421783423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10179250 + ... + 10294268.

It is an arithmetic number, because the mean of its divisors is an integer number (53139240000).

Almost surely, 2^{1177421783421} is an apocalyptic number.

It is an amenable number.

1177421783421 is a deficient number, since it is larger than the sum of its proper divisors (523033896579).

1177421783421 is a wasteful number, since it uses less digits than its factorization.

1177421783421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116553.

The product of its digits is 526848, while the sum is 48.

The spelling of 1177421783421 in words is "one trillion, one hundred seventy-seven billion, four hundred twenty-one million, seven hundred eighty-three thousand, four hundred twenty-one".