20578462867 has 8 divisors (see below), whose sum is σ = 21690170000. Its totient is φ = 19469618784.

The previous prime is 20578462847. The next prime is 20578462903. The reversal of 20578462867 is 76826487502.

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 20578462867 - 2³¹ = 18430979219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20578462837) 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, 700992 + ... + 729757.

It is an arithmetic number, because the mean of its divisors is an integer number (2711271250).

Almost surely, 2^20578462867 is an apocalyptic number.

20578462867 is a deficient number, since it is larger than the sum of its proper divisors (1111707133).

20578462867 is a wasteful number, since it uses less digits than its factorization.

20578462867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431525.

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 20578462867 in words is "twenty billion, five hundred seventy-eight million, four hundred sixty-two thousand, eight hundred sixty-seven".