21603151330074 has 12 divisors (see below), whose sum is σ = 46806827881866. Its totient is φ = 7201050443352.

The previous prime is 21603151330073. The next prime is 21603151330097. The reversal of 21603151330074 is 47003315130612.

21603151330074 is a `hidden beast` number, since 2 + 1 + 6 + 0 + 315 + 1 + 330 + 0 + 7 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17536705659225 + 4066445670849 = 4187685^2 + 2016543^2 .

It is a super-2 number, since 2×21603151330074² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21603151330073) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 600087536929 + ... + 600087536964.

Almost surely, 2^{21603151330074} is an apocalyptic number.

21603151330074 is an abundant number, since it is smaller than the sum of its proper divisors (25203676551792).

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

21603151330074 is a wasteful number, since it uses less digits than its factorization.

21603151330074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200175073901 (or 1200175073898 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

Adding to 21603151330074 its reverse (47003315130612), we get a palindrome (68606466460686).

The spelling of 21603151330074 in words is "twenty-one trillion, six hundred three billion, one hundred fifty-one million, three hundred thirty thousand, seventy-four".