33557307077640 has 128 divisors (see below), whose sum is σ = 100763928720000. Its totient is φ = 8940439818240.

The previous prime is 33557307077627. The next prime is 33557307077663. The reversal of 33557307077640 is 4677070375533.

It is a super-2 number, since 2×33557307077640² (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 31 ways as a sum of consecutive naturals, for example, 808180080 + ... + 808221600.

It is an arithmetic number, because the mean of its divisors is an integer number (787218193125).

Almost surely, 2^{33557307077640} is an apocalyptic number.

33557307077640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33557307077640 is an abundant number, since it is smaller than the sum of its proper divisors (67206621642360).

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

33557307077640 is a wasteful number, since it uses less digits than its factorization.

33557307077640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47527 (or 47523 counting only the distinct ones).

The product of its (nonzero) digits is 38896200, while the sum is 57.

The spelling of 33557307077640 in words is "thirty-three trillion, five hundred fifty-seven billion, three hundred seven million, seventy-seven thousand, six hundred forty".