20146597680 has 160 divisors (see below), whose sum is σ = 69973878528. Its totient is φ = 4752000000.

The previous prime is 20146597619. The next prime is 20146597703. The reversal of 20146597680 is 8679564102.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5446 + ... + 200805.

Almost surely, 2^20146597680 is an apocalyptic number.

20146597680 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 20146597680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34986939264).

20146597680 is an abundant number, since it is smaller than the sum of its proper divisors (49827280848).

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

20146597680 is a wasteful number, since it uses less digits than its factorization.

20146597680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206315 (or 206309 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 20146597680 in words is "twenty billion, one hundred forty-six million, five hundred ninety-seven thousand, six hundred eighty".