61445550033 has 54 divisors (see below), whose sum is σ = 103712904594. Its totient is φ = 34953109632.

The previous prime is 61445550013. The next prime is 61445550043. The reversal of 61445550033 is 33005554416.

61445550033 is a `hidden beast` number, since 6 + 144 + 5 + 5 + 500 + 3 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 46676738304 + 14768811729 = 216048^2 + 121527^2 .

It is not a de Polignac number, because 61445550033 - 2¹² = 61445545937 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 61445550033.

It is not an unprimeable number, because it can be changed into a prime (61445550013) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 95560410 + ... + 95561052.

Almost surely, 2^61445550033 is an apocalyptic number.

61445550033 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

61445550033 is a deficient number, since it is larger than the sum of its proper divisors (42267354561).

61445550033 is an equidigital number, since it uses as much as digits as its factorization.

61445550033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643 (or 990 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 61445550033 in words is "sixty-one billion, four hundred forty-five million, five hundred fifty thousand, thirty-three".