20453473698 has 32 divisors (see below), whose sum is σ = 47118925824. Its totient is φ = 5797833552.

The previous prime is 20453473681. The next prime is 20453473739. The reversal of 20453473698 is 89637435402.

It is a super-3 number, since 3×20453473698³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20453473698.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1911940 + ... + 1922607.

It is an arithmetic number, because the mean of its divisors is an integer number (1472466432).

Almost surely, 2^20453473698 is an apocalyptic number.

20453473698 is an abundant number, since it is smaller than the sum of its proper divisors (26665452126).

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

20453473698 is a wasteful number, since it uses less digits than its factorization.

20453473698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834686.

The product of its (nonzero) digits is 4354560, while the sum is 51.

It can be divided in two parts, 2045 and 3473698, that added together give a palindrome (3475743).

The spelling of 20453473698 in words is "twenty billion, four hundred fifty-three million, four hundred seventy-three thousand, six hundred ninety-eight".