661452250033 has 8 divisors (see below), whose sum is σ = 684281998080. Its totient is φ = 638623905360.

The previous prime is 661452250021. The next prime is 661452250037. The reversal of 661452250033 is 330052254166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 661452250033 - 2⁵ = 661452250001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 661452249974 and 661452250001.

It is not an unprimeable number, because it can be changed into a prime (661452250037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 657216 + ... + 1324702.

It is an arithmetic number, because the mean of its divisors is an integer number (85535249760).

Almost surely, 2^661452250033 is an apocalyptic number.

It is an amenable number.

661452250033 is a deficient number, since it is larger than the sum of its proper divisors (22829748047).

661452250033 is a wasteful number, since it uses less digits than its factorization.

661452250033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701687.

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 661452250033 in words is "six hundred sixty-one billion, four hundred fifty-two million, two hundred fifty thousand, thirty-three".