71986070641 has 4 divisors (see below), whose sum is σ = 74308201984. Its totient is φ = 69663939300.

The previous prime is 71986070633. The next prime is 71986070683. The reversal of 71986070641 is 14607068917.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71986070641 - 2³ = 71986070633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71986070041) 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, 1161065625 + ... + 1161065686.

It is an arithmetic number, because the mean of its divisors is an integer number (18577050496).

Almost surely, 2^71986070641 is an apocalyptic number.

It is an amenable number.

71986070641 is a deficient number, since it is larger than the sum of its proper divisors (2322131343).

71986070641 is a wasteful number, since it uses less digits than its factorization.

71986070641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322131342.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 71986070641 in words is "seventy-one billion, nine hundred eighty-six million, seventy thousand, six hundred forty-one".