20630400501 has 8 divisors (see below), whose sum is σ = 27550796224. Its totient is φ = 13731802560.

The previous prime is 20630400499. The next prime is 20630400559. The reversal of 20630400501 is 10500403602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20630400501 - 2¹ = 20630400499 is a prime.

It is a super-2 number, since 2×20630400501² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20630400601) 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, 5447236 + ... + 5451021.

It is an arithmetic number, because the mean of its divisors is an integer number (3443849528).

Almost surely, 2^20630400501 is an apocalyptic number.

It is an amenable number.

20630400501 is a deficient number, since it is larger than the sum of its proper divisors (6920395723).

20630400501 is a wasteful number, since it uses less digits than its factorization.

20630400501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10898891.

The product of its (nonzero) digits is 720, while the sum is 21.

The spelling of 20630400501 in words is "twenty billion, six hundred thirty million, four hundred thousand, five hundred one".