20630251454 has 8 divisors (see below), whose sum is σ = 30946222800. Its totient is φ = 10314843856.

The previous prime is 20630251403. The next prime is 20630251457. The reversal of 20630251454 is 45415203602.

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

It is a super-2 number, since 2×20630251454² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20630251454.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20630251457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32879 + ... + 205770.

It is an arithmetic number, because the mean of its divisors is an integer number (3868277850).

Almost surely, 2^20630251454 is an apocalyptic number.

20630251454 is a deficient number, since it is larger than the sum of its proper divisors (10315971346).

20630251454 is a wasteful number, since it uses less digits than its factorization.

20630251454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281874.

The product of its (nonzero) digits is 28800, while the sum is 32.

The spelling of 20630251454 in words is "twenty billion, six hundred thirty million, two hundred fifty-one thousand, four hundred fifty-four".