20867592949 has 8 divisors (see below), whose sum is σ = 23859771840. Its totient is φ = 17878187616.

The previous prime is 20867592943. The next prime is 20867592971. The reversal of 20867592949 is 94929576802.

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 20867592949 - 2⁵ = 20867592917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20867592943) 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, 677239 + ... + 707380.

It is an arithmetic number, because the mean of its divisors is an integer number (2982471480).

Almost surely, 2^20867592949 is an apocalyptic number.

It is an amenable number.

20867592949 is a deficient number, since it is larger than the sum of its proper divisors (2992178891).

20867592949 is a wasteful number, since it uses less digits than its factorization.

20867592949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1386779.

The product of its (nonzero) digits is 19595520, while the sum is 61.

The spelling of 20867592949 in words is "twenty billion, eight hundred sixty-seven million, five hundred ninety-two thousand, nine hundred forty-nine".