20349195264 has 264 divisors, whose sum is σ = 60284772288. Its totient is φ = 6609469440.

The previous prime is 20349195239. The next prime is 20349195271. The reversal of 20349195264 is 46259194302.

20349195264 is a `hidden beast` number, since 2 + 0 + 34 + 91 + 9 + 526 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89643919 + ... + 89644145.

Almost surely, 2^20349195264 is an apocalyptic number.

20349195264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20349195264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30142386144).

20349195264 is an abundant number, since it is smaller than the sum of its proper divisors (39935577024).

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

20349195264 is a wasteful number, since it uses less digits than its factorization.

20349195264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The spelling of 20349195264 in words is "twenty billion, three hundred forty-nine million, one hundred ninety-five thousand, two hundred sixty-four".