33481243978 has 16 divisors (see below), whose sum is σ = 61811527680. Its totient is φ = 13245327216.

The previous prime is 33481243951. The next prime is 33481243981. The reversal of 33481243978 is 87934218433.

It is a super-2 number, since 2×33481243978² (a number of 22 digits) contains 22 as substring.

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, 91981258 + ... + 91981621.

It is an arithmetic number, because the mean of its divisors is an integer number (3863220480).

Almost surely, 2^33481243978 is an apocalyptic number.

33481243978 is a deficient number, since it is larger than the sum of its proper divisors (28330283702).

33481243978 is a wasteful number, since it uses less digits than its factorization.

33481243978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183962901.

The product of its digits is 3483648, while the sum is 52.

The spelling of 33481243978 in words is "thirty-three billion, four hundred eighty-one million, two hundred forty-three thousand, nine hundred seventy-eight".