11905553970 has 48 divisors (see below), whose sum is σ = 31060155672. Its totient is φ = 3163971840.

The previous prime is 11905553927. The next prime is 11905553981. The reversal of 11905553970 is 7935550911.

11905553970 is a `hidden beast` number, since 1 + 1 + 9 + 0 + 5 + 553 + 97 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 11476194129 + 429359841 = 107127^2 + 20721^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199371 + ... + 252110.

Almost surely, 2^11905553970 is an apocalyptic number.

11905553970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11905553970 is an abundant number, since it is smaller than the sum of its proper divisors (19154601702).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11905553970 is a wasteful number, since it uses less digits than its factorization.

11905553970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451787 (or 451784 counting only the distinct ones).

The product of its (nonzero) digits is 212625, while the sum is 45.

The spelling of 11905553970 in words is "eleven billion, nine hundred five million, five hundred fifty-three thousand, nine hundred seventy".