1201177789426 has 16 divisors (see below), whose sum is σ = 1896695084160. Its totient is φ = 568949380560.

The previous prime is 1201177789403. The next prime is 1201177789433. The reversal of 1201177789426 is 6249877711021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71821 + ... + 1551616.

It is an arithmetic number, because the mean of its divisors is an integer number (118543442760).

Almost surely, 2^{1201177789426} is an apocalyptic number.

1201177789426 is a deficient number, since it is larger than the sum of its proper divisors (695517294734).

1201177789426 is a wasteful number, since it uses less digits than its factorization.

1201177789426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642929.

The product of its (nonzero) digits is 2370816, while the sum is 55.

The spelling of 1201177789426 in words is "one trillion, two hundred one billion, one hundred seventy-seven million, seven hundred eighty-nine thousand, four hundred twenty-six".