6951970682281 has 9 divisors (see below), whose sum is σ = 6964276596823. Its totient is φ = 6939686488000.

The previous prime is 6951970682243. The next prime is 6951970682291. The reversal of 6951970682281 is 1822860791596.

It is a happy number.

The square root of 6951970682281 is 2636659.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 278635123881 + 6673335558400 = 527859^2 + 2583280^2 .

It is a de Polignac number, because none of the positive numbers 2^k-6951970682281 is a prime.

It is a super-2 number, since 2×6951970682281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6951970682291) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1737556281 + ... + 1737560281.

Almost surely, 2^{6951970682281} is an apocalyptic number.

6951970682281 is the 2636659-th square number.

6951970682281 is the 1318330-th centered octagonal number.

It is an amenable number.

6951970682281 is a deficient number, since it is larger than the sum of its proper divisors (12305914542).

6951970682281 is an frugal number, since it uses more digits than its factorization.

6951970682281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9320 (or 4660 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 64.

Multiplying 6951970682281 by its sum of digits (64), we get a square (444926123665984 = 21093272²).

The spelling of 6951970682281 in words is "six trillion, nine hundred fifty-one billion, nine hundred seventy million, six hundred eighty-two thousand, two hundred eighty-one".