7971037525061 has 4 divisors (see below), whose sum is σ = 8584194257772. Its totient is φ = 7357880792352.

The previous prime is 7971037525027. The next prime is 7971037525069. The reversal of 7971037525061 is 1605257301797.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 726832977025 + 7244204548036 = 852545^2 + 2691506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7971037525061 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7971037524994 and 7971037525012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971037525069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306578366336 + ... + 306578366361.

It is an arithmetic number, because the mean of its divisors is an integer number (2146048564443).

Almost surely, 2^{7971037525061} is an apocalyptic number.

It is an amenable number.

7971037525061 is a deficient number, since it is larger than the sum of its proper divisors (613156732711).

7971037525061 is a wasteful number, since it uses less digits than its factorization.

7971037525061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613156732710.

The product of its (nonzero) digits is 2778300, while the sum is 53.

The spelling of 7971037525061 in words is "seven trillion, nine hundred seventy-one billion, thirty-seven million, five hundred twenty-five thousand, sixty-one".