20990515348 has 12 divisors (see below), whose sum is σ = 40072802112. Its totient is φ = 9541143320.

The previous prime is 20990515319. The next prime is 20990515361. The reversal of 20990515348 is 84351509902.

It is a super-2 number, since 2×20990515348² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20990515298 and 20990515307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238528540 + ... + 238528627.

It is an arithmetic number, because the mean of its divisors is an integer number (3339400176).

Almost surely, 2^20990515348 is an apocalyptic number.

It is an amenable number.

20990515348 is a deficient number, since it is larger than the sum of its proper divisors (19082286764).

20990515348 is a wasteful number, since it uses less digits than its factorization.

20990515348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477057182 (or 477057180 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 20990515348 in words is "twenty billion, nine hundred ninety million, five hundred fifteen thousand, three hundred forty-eight".