20261172547162 has 8 divisors (see below), whose sum is σ = 30391806876192. Its totient is φ = 10130570255100.

The previous prime is 20261172547159. The next prime is 20261172547163. The reversal of 20261172547162 is 26174527116202.

It is a happy number.

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

It is a super-2 number, since 2×20261172547162² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20261172547163) 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, 6360264 + ... + 8998627.

It is an arithmetic number, because the mean of its divisors is an integer number (3798975859524).

Almost surely, 2^{20261172547162} is an apocalyptic number.

20261172547162 is a deficient number, since it is larger than the sum of its proper divisors (10130634329030).

20261172547162 is a wasteful number, since it uses less digits than its factorization.

20261172547162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16018484.

The product of its (nonzero) digits is 564480, while the sum is 46.

The spelling of 20261172547162 in words is "twenty trillion, two hundred sixty-one billion, one hundred seventy-two million, five hundred forty-seven thousand, one hundred sixty-two".