153313761561 has 4 divisors (see below), whose sum is σ = 204418348752. Its totient is φ = 102209174372.

The previous prime is 153313761553. The next prime is 153313761677. The reversal of 153313761561 is 165167313351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 153313761561 - 2³ = 153313761553 is a prime.

It is a super-2 number, since 2×153313761561² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (153313761961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25552293591 + ... + 25552293596.

It is an arithmetic number, because the mean of its divisors is an integer number (51104587188).

Almost surely, 2^153313761561 is an apocalyptic number.

It is an amenable number.

153313761561 is a deficient number, since it is larger than the sum of its proper divisors (51104587191).

153313761561 is an equidigital number, since it uses as much as digits as its factorization.

153313761561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51104587190.

The product of its digits is 170100, while the sum is 42.

The spelling of 153313761561 in words is "one hundred fifty-three billion, three hundred thirteen million, seven hundred sixty-one thousand, five hundred sixty-one".