63551801405 has 16 divisors (see below), whose sum is σ = 76865899968. Its totient is φ = 50439168000.

The previous prime is 63551801359. The next prime is 63551801419. The reversal of 63551801405 is 50410815536.

It is not a de Polignac number, because 63551801405 - 2¹⁶ = 63551735869 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 2746685 + ... + 2769725.

It is an arithmetic number, because the mean of its divisors is an integer number (4804118748).

Almost surely, 2^63551801405 is an apocalyptic number.

It is an amenable number.

63551801405 is a deficient number, since it is larger than the sum of its proper divisors (13314098563).

63551801405 is a wasteful number, since it uses less digits than its factorization.

63551801405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27388.

The product of its (nonzero) digits is 72000, while the sum is 38.

The spelling of 63551801405 in words is "sixty-three billion, five hundred fifty-one million, eight hundred one thousand, four hundred five".