20090115356 has 24 divisors (see below), whose sum is σ = 35939218560. Its totient is φ = 9823925232.

The previous prime is 20090115319. The next prime is 20090115379. The reversal of 20090115356 is 65351109002.

It is a super-2 number, since 2×20090115356² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232400 + ... + 306903.

It is an arithmetic number, because the mean of its divisors is an integer number (1497467440).

Almost surely, 2^20090115356 is an apocalyptic number.

It is an amenable number.

20090115356 is a deficient number, since it is larger than the sum of its proper divisors (15849103204).

20090115356 is a wasteful number, since it uses less digits than its factorization.

20090115356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539513 (or 539511 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 32.

The spelling of 20090115356 in words is "twenty billion, ninety million, one hundred fifteen thousand, three hundred fifty-six".