20777254401 has 8 divisors (see below), whose sum is σ = 28907484480. Its totient is φ = 13249263632.

The previous prime is 20777254391. The next prime is 20777254411. The reversal of 20777254401 is 10445277702.

It is an interprime number because it is at equal distance from previous prime (20777254391) and next prime (20777254411).

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

It is a cyclic number.

It is not a de Polignac number, because 20777254401 - 2¹⁷ = 20777123329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20777254401.

It is not an unprimeable number, because it can be changed into a prime (20777254411) 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, 150559746 + ... + 150559883.

It is an arithmetic number, because the mean of its divisors is an integer number (3613435560).

Almost surely, 2^20777254401 is an apocalyptic number.

It is an amenable number.

20777254401 is a deficient number, since it is larger than the sum of its proper divisors (8130230079).

20777254401 is a wasteful number, since it uses less digits than its factorization.

20777254401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301119655.

The product of its (nonzero) digits is 109760, while the sum is 39.

The spelling of 20777254401 in words is "twenty billion, seven hundred seventy-seven million, two hundred fifty-four thousand, four hundred one".