20152829261 has 8 divisors (see below), whose sum is σ = 20649908664. Its totient is φ = 19656014080.

The previous prime is 20152829219. The next prime is 20152829273. The reversal of 20152829261 is 16292825102.

It can be written as a sum of positive squares in 4 ways, for example, as 956726761 + 19196102500 = 30931^2 + 138550^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20152829261 - 2²⁶ = 20085720397 is a prime.

It is a super-2 number, since 2×20152829261² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20152819261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93035 + ... + 221271.

It is an arithmetic number, because the mean of its divisors is an integer number (2581238583).

Almost surely, 2^20152829261 is an apocalyptic number.

It is an amenable number.

20152829261 is a deficient number, since it is larger than the sum of its proper divisors (497079403).

20152829261 is a wasteful number, since it uses less digits than its factorization.

20152829261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132111.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 20152829261 in words is "twenty billion, one hundred fifty-two million, eight hundred twenty-nine thousand, two hundred sixty-one".