20460446040 has 32 divisors (see below), whose sum is σ = 61381338480. Its totient is φ = 5456118912.

The previous prime is 20460446023. The next prime is 20460446051. The reversal of 20460446040 is 4064406402.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20460445989 and 20460446007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85251739 + ... + 85251978.

Almost surely, 2^20460446040 is an apocalyptic number.

20460446040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20460446040 is an abundant number, since it is smaller than the sum of its proper divisors (40920892440).

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

20460446040 is a wasteful number, since it uses less digits than its factorization.

20460446040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170503731 (or 170503727 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 20460446040 in words is "twenty billion, four hundred sixty million, four hundred forty-six thousand, forty".