33780497747946 has 8 divisors (see below), whose sum is σ = 67560995495904. Its totient is φ = 11260165915980.

The previous prime is 33780497747849. The next prime is 33780497747951. The reversal of 33780497747946 is 64974779408733.

It is a sphenic number, since it is the product of 3 distinct primes.

33780497747946 is an admirable number.

It is a super-2 number, since 2×33780497747946² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2815041478990 + ... + 2815041479001.

It is an arithmetic number, because the mean of its divisors is an integer number (8445124436988).

Almost surely, 2^{33780497747946} is an apocalyptic number.

33780497747946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

33780497747946 is a wasteful number, since it uses less digits than its factorization.

33780497747946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5630082957996.

The product of its (nonzero) digits is 5377010688, while the sum is 78.

The spelling of 33780497747946 in words is "thirty-three trillion, seven hundred eighty billion, four hundred ninety-seven million, seven hundred forty-seven thousand, nine hundred forty-six".