33406661040 has 40 divisors (see below), whose sum is σ = 103560649968. Its totient is φ = 8908442880.

The previous prime is 33406661021. The next prime is 33406661069. The reversal of 33406661040 is 4016660433.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×33406661040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33406660992 and 33406661010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69596971 + ... + 69597450.

Almost surely, 2^33406661040 is an apocalyptic number.

33406661040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33406661040 is an abundant number, since it is smaller than the sum of its proper divisors (70153988928).

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

33406661040 is a wasteful number, since it uses less digits than its factorization.

33406661040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139194437 (or 139194431 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 33.

The spelling of 33406661040 in words is "thirty-three billion, four hundred six million, six hundred sixty-one thousand, forty".