4161621522 has 64 divisors (see below), whose sum is σ = 9085944960. Its totient is φ = 1265762304.

The previous prime is 4161621479. The next prime is 4161621553. The reversal of 4161621522 is 2251261614.

It is a self number, because there is not a number n which added to its sum of digits gives 4161621522.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 434578 + ... + 444050.

It is an arithmetic number, because the mean of its divisors is an integer number (141967890).

Almost surely, 2^4161621522 is an apocalyptic number.

4161621522 is an abundant number, since it is smaller than the sum of its proper divisors (4924323438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4161621522 is a wasteful number, since it uses less digits than its factorization.

4161621522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9627.

The product of its digits is 5760, while the sum is 30.

The square root of 4161621522 is about 64510.6310773658. The cubic root of 4161621522 is about 1608.4992408829.

The spelling of 4161621522 in words is "four billion, one hundred sixty-one million, six hundred twenty-one thousand, five hundred twenty-two".