120890198405 has 16 divisors (see below), whose sum is σ = 145852366080. Its totient is φ = 96189631488.

The previous prime is 120890198353. The next prime is 120890198447. The reversal of 120890198405 is 504891098021.

It is a cyclic number.

It is not a de Polignac number, because 120890198405 - 2¹² = 120890194309 is a prime.

It is a super-2 number, since 2×120890198405² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120890198405.

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, 5415056 + ... + 5437334.

It is an arithmetic number, because the mean of its divisors is an integer number (9115772880).

Almost surely, 2^120890198405 is an apocalyptic number.

It is an amenable number.

120890198405 is a deficient number, since it is larger than the sum of its proper divisors (24962167675).

120890198405 is a wasteful number, since it uses less digits than its factorization.

120890198405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28100.

The product of its (nonzero) digits is 207360, while the sum is 47.

The spelling of 120890198405 in words is "one hundred twenty billion, eight hundred ninety million, one hundred ninety-eight thousand, four hundred five".