20477615255 has 8 divisors (see below), whose sum is σ = 24766628352. Its totient is φ = 16253098848.

The previous prime is 20477615239. The next prime is 20477615281. The reversal of 20477615255 is 55251677402.

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 20477615255 - 2⁴ = 20477615239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16123472 + ... + 16124741.

It is an arithmetic number, because the mean of its divisors is an integer number (3095828544).

Almost surely, 2^20477615255 is an apocalyptic number.

20477615255 is a deficient number, since it is larger than the sum of its proper divisors (4289013097).

20477615255 is a wasteful number, since it uses less digits than its factorization.

20477615255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32248345.

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 20477615255 in words is "twenty billion, four hundred seventy-seven million, six hundred fifteen thousand, two hundred fifty-five".