220061578156311 has 4 divisors (see below), whose sum is σ = 293415437541752. Its totient is φ = 146707718770872.

The previous prime is 220061578156291. The next prime is 220061578156313. The reversal of 220061578156311 is 113651875160022.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 220061578156311 - 2⁷ = 220061578156183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220061578156313) 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, 36676929692716 + ... + 36676929692721.

It is an arithmetic number, because the mean of its divisors is an integer number (73353859385438).

Almost surely, 2^{220061578156311} is an apocalyptic number.

220061578156311 is a deficient number, since it is larger than the sum of its proper divisors (73353859385441).

220061578156311 is an equidigital number, since it uses as much as digits as its factorization.

220061578156311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73353859385440.

The product of its (nonzero) digits is 604800, while the sum is 48.

The spelling of 220061578156311 in words is "two hundred twenty trillion, sixty-one billion, five hundred seventy-eight million, one hundred fifty-six thousand, three hundred eleven".