20279519416 has 32 divisors (see below), whose sum is σ = 41194268640. Its totient is φ = 9303723648.

The previous prime is 20279519411. The next prime is 20279519437. The reversal of 20279519416 is 61491597202.

It is a super-2 number, since 2×20279519416² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20279519411) 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, 566451 + ... + 601186.

It is an arithmetic number, because the mean of its divisors is an integer number (1287320895).

Almost surely, 2^20279519416 is an apocalyptic number.

20279519416 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20279519416 is an abundant number, since it is smaller than the sum of its proper divisors (20914749224).

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

20279519416 is a wasteful number, since it uses less digits than its factorization.

20279519416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167823 (or 1167819 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 20279519416 in words is "twenty billion, two hundred seventy-nine million, five hundred nineteen thousand, four hundred sixteen".