20715006278 has 8 divisors (see below), whose sum is σ = 31101743568. Its totient is φ = 10347758424.

The previous prime is 20715006239. The next prime is 20715006343. The reversal of 20715006278 is 87260051702.

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

It is a super-2 number, since 2×20715006278² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4869701 + ... + 4873952.

It is an arithmetic number, because the mean of its divisors is an integer number (3887717946).

Almost surely, 2^20715006278 is an apocalyptic number.

20715006278 is a deficient number, since it is larger than the sum of its proper divisors (10386737290).

20715006278 is a wasteful number, since it uses less digits than its factorization.

20715006278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9744718.

The product of its (nonzero) digits is 47040, while the sum is 38.

The spelling of 20715006278 in words is "twenty billion, seven hundred fifteen million, six thousand, two hundred seventy-eight".