61322533533 has 48 divisors (see below), whose sum is σ = 94277314560. Its totient is φ = 38346890400.

The previous prime is 61322533523. The next prime is 61322533541. The reversal of 61322533533 is 33533522316.

61322533533 is a `hidden beast` number, since 61 + 32 + 2 + 5 + 33 + 533 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-61322533533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61322533513) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1552098 + ... + 1591116.

It is an arithmetic number, because the mean of its divisors is an integer number (1964110720).

Almost surely, 2^61322533533 is an apocalyptic number.

It is an amenable number.

61322533533 is a deficient number, since it is larger than the sum of its proper divisors (32954781027).

61322533533 is a wasteful number, since it uses less digits than its factorization.

61322533533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39230 (or 39227 counting only the distinct ones).

The product of its digits is 145800, while the sum is 36.

The spelling of 61322533533 in words is "sixty-one billion, three hundred twenty-two million, five hundred thirty-three thousand, five hundred thirty-three".