16101773540 has 24 divisors (see below), whose sum is σ = 33872351352. Its totient is φ = 6429542400.

The previous prime is 16101773473. The next prime is 16101773543. The reversal of 16101773540 is 4537710161.

It can be written as a sum of positive squares in 4 ways, for example, as 1618613824 + 14483159716 = 40232^2 + 120346^2 .

It is a super-2 number, since 2×16101773540² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16101773540.

It is not an unprimeable number, because it can be changed into a prime (16101773543) 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, 686111 + ... + 709190.

It is an arithmetic number, because the mean of its divisors is an integer number (1411347973).

Almost surely, 2^16101773540 is an apocalyptic number.

16101773540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16101773540 is an abundant number, since it is smaller than the sum of its proper divisors (17770577812).

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

16101773540 is a wasteful number, since it uses less digits than its factorization.

16101773540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395887 (or 1395885 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The spelling of 16101773540 in words is "sixteen billion, one hundred one million, seven hundred seventy-three thousand, five hundred forty".