1161120621405 has 16 divisors (see below), whose sum is σ = 1861012753344. Its totient is φ = 618191078400.

The previous prime is 1161120621383. The next prime is 1161120621421. The reversal of 1161120621405 is 5041260211611.

It is not a de Polignac number, because 1161120621405 - 2¹⁶ = 1161120555869 is a prime.

It is a super-3 number, since 3×1161120621405³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67069371 + ... + 67086680.

It is an arithmetic number, because the mean of its divisors is an integer number (116313297084).

Almost surely, 2^{1161120621405} is an apocalyptic number.

1161120621405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161120621405 is a deficient number, since it is larger than the sum of its proper divisors (699892131939).

1161120621405 is a wasteful number, since it uses less digits than its factorization.

1161120621405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134156636.

The product of its (nonzero) digits is 2880, while the sum is 30.

The spelling of 1161120621405 in words is "one trillion, one hundred sixty-one billion, one hundred twenty million, six hundred twenty-one thousand, four hundred five".