20456029464 has 32 divisors (see below), whose sum is σ = 55073926320. Its totient is φ = 6294162816.

The previous prime is 20456029463. The next prime is 20456029471. The reversal of 20456029464 is 46492065402.

It is a super-2 number, since 2×20456029464² (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 (20456029463) 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, 32781787 + ... + 32782410.

Almost surely, 2^20456029464 is an apocalyptic number.

20456029464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20456029464 is an abundant number, since it is smaller than the sum of its proper divisors (34617896856).

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

20456029464 is a wasteful number, since it uses less digits than its factorization.

20456029464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65564219 (or 65564215 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 20456029464 in words is "twenty billion, four hundred fifty-six million, twenty-nine thousand, four hundred sixty-four".