10721011701178 has 8 divisors (see below), whose sum is σ = 16118657316468. Its totient is φ = 5348125929024.

The previous prime is 10721011701149. The next prime is 10721011701217. The reversal of 10721011701178 is 87110711012701.

It can be written as a sum of positive squares in 2 ways, for example, as 9624494861569 + 1096516839609 = 3102337^2 + 1047147^2 .

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

It is a super-2 number, since 2×10721011701178² (a number of 27 digits) contains 22 as substring.

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, 6189959701 + ... + 6189961432.

Almost surely, 2^{10721011701178} is an apocalyptic number.

10721011701178 is a deficient number, since it is larger than the sum of its proper divisors (5397645615290).

10721011701178 is a wasteful number, since it uses less digits than its factorization.

10721011701178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12379921568.

The product of its (nonzero) digits is 5488, while the sum is 37.

Adding to 10721011701178 its reverse (87110711012701), we get a palindrome (97831722713879).

The spelling of 10721011701178 in words is "ten trillion, seven hundred twenty-one billion, eleven million, seven hundred one thousand, one hundred seventy-eight".