253289367661 has 8 divisors (see below), whose sum is σ = 276328188864. Its totient is φ = 230252632320.

The previous prime is 253289367659. The next prime is 253289367671. The reversal of 253289367661 is 166763982352.

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 253289367661 - 2¹ = 253289367659 is a prime.

It is a super-2 number, since 2×253289367661² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 253289367596 and 253289367605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253289367671) 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, 261940 + ... + 758413.

It is an arithmetic number, because the mean of its divisors is an integer number (34541023608).

Almost surely, 2^253289367661 is an apocalyptic number.

It is an amenable number.

253289367661 is a deficient number, since it is larger than the sum of its proper divisors (23038821203).

253289367661 is a wasteful number, since it uses less digits than its factorization.

253289367661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042931.

The product of its digits is 19595520, while the sum is 58.

The spelling of 253289367661 in words is "two hundred fifty-three billion, two hundred eighty-nine million, three hundred sixty-seven thousand, six hundred sixty-one".