20477207630 has 64 divisors (see below), whose sum is σ = 42745605120. Its totient is φ = 6984432000.

The previous prime is 20477207629. The next prime is 20477207689. The reversal of 20477207630 is 3670277402.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

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, 162587 + ... + 259593.

It is an arithmetic number, because the mean of its divisors is an integer number (667900080).

Almost surely, 2^20477207630 is an apocalyptic number.

20477207630 is an abundant number, since it is smaller than the sum of its proper divisors (22268397490).

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

20477207630 is a wasteful number, since it uses less digits than its factorization.

20477207630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97145.

The product of its (nonzero) digits is 98784, while the sum is 38.

The spelling of 20477207630 in words is "twenty billion, four hundred seventy-seven million, two hundred seven thousand, six hundred thirty".