20434512750 has 64 divisors (see below), whose sum is σ = 52248635712. Its totient is φ = 5316288000.

The previous prime is 20434512743. The next prime is 20434512781. The reversal of 20434512750 is 5721543402.

It is a super-2 number, since 2×20434512750² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 301519 + ... + 363018.

It is an arithmetic number, because the mean of its divisors is an integer number (816384933).

Almost surely, 2^20434512750 is an apocalyptic number.

20434512750 is an abundant number, since it is smaller than the sum of its proper divisors (31814122962).

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

20434512750 is a wasteful number, since it uses less digits than its factorization.

20434512750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664598 (or 664588 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 33.

The spelling of 20434512750 in words is "twenty billion, four hundred thirty-four million, five hundred twelve thousand, seven hundred fifty".