20976323760 has 1080 divisors, whose sum is σ = 91160321616. Its totient is φ = 4467778560.

The previous prime is 20976323717. The next prime is 20976323813. The reversal of 20976323760 is 6732367902.

20976323760 is a `hidden beast` number, since 2 + 0 + 9 + 7 + 632 + 3 + 7 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1080).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 343874130 + ... + 343874190.

Almost surely, 2^20976323760 is an apocalyptic number.

20976323760 is a gapful number since it is divisible by the number (20) 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 20976323760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45580160808).

20976323760 is an abundant number, since it is smaller than the sum of its proper divisors (70183997856).

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

20976323760 is a wasteful number, since it uses less digits than its factorization.

20976323760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 571536, while the sum is 45.

The spelling of 20976323760 in words is "twenty billion, nine hundred seventy-six million, three hundred twenty-three thousand, seven hundred sixty".