20726881470 has 24 divisors (see below), whose sum is σ = 53889892056. Its totient is φ = 5527168368.

The previous prime is 20726881447. The next prime is 20726881471. The reversal of 20726881470 is 7418862702.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20726881471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115149252 + ... + 115149431.

It is an arithmetic number, because the mean of its divisors is an integer number (2245412169).

Almost surely, 2^20726881470 is an apocalyptic number.

20726881470 is an abundant number, since it is smaller than the sum of its proper divisors (33163010586).

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

20726881470 is a wasteful number, since it uses less digits than its factorization.

20726881470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230298696 (or 230298693 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The spelling of 20726881470 in words is "twenty billion, seven hundred twenty-six million, eight hundred eighty-one thousand, four hundred seventy".