33672556145 has 16 divisors (see below), whose sum is σ = 41910056208. Its totient is φ = 25950470400.

The previous prime is 33672556133. The next prime is 33672556147. The reversal of 33672556145 is 54165527633.

It can be written as a sum of positive squares in 8 ways, for example, as 312264241 + 33360291904 = 17671^2 + 182648^2 .

It is not a de Polignac number, because 33672556145 - 2¹⁶ = 33672490609 is a prime.

It is a super-2 number, since 2×33672556145² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 33672556145.

It is not an unprimeable number, because it can be changed into a prime (33672556147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882374 + ... + 919743.

It is an arithmetic number, because the mean of its divisors is an integer number (2619378513).

Almost surely, 2^33672556145 is an apocalyptic number.

It is an amenable number.

33672556145 is a deficient number, since it is larger than the sum of its proper divisors (8237500063).

33672556145 is a wasteful number, since it uses less digits than its factorization.

33672556145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1802260.

The product of its digits is 2268000, while the sum is 47.

The spelling of 33672556145 in words is "thirty-three billion, six hundred seventy-two million, five hundred fifty-six thousand, one hundred forty-five".