33203763961 has 9 divisors (see below), whose sum is σ = 33934010799. Its totient is φ = 32488918824.

The previous prime is 33203763949. The next prime is 33203763977. The reversal of 33203763961 is 16936730233.

The square root of 33203763961 is 182219.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 8442853225 + 24760910736 = 91885^2 + 157356^2 .

It is not a de Polignac number, because 33203763961 - 2⁷ = 33203763833 is a prime.

It is a super-2 number, since 2×33203763961² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33203463961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8562355 + ... + 8566231.

Almost surely, 2^33203763961 is an apocalyptic number.

33203763961 is the 182219-th square number.

33203763961 is the 91110-th centered octagonal number.

It is an amenable number.

33203763961 is a deficient number, since it is larger than the sum of its proper divisors (730246838).

33203763961 is an frugal number, since it uses more digits than its factorization.

33203763961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7848 (or 3924 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 43.

The spelling of 33203763961 in words is "thirty-three billion, two hundred three million, seven hundred sixty-three thousand, nine hundred sixty-one".