78621573701 has 8 divisors (see below), whose sum is σ = 90814224384. Its totient is φ = 67269795520.

The previous prime is 78621573683. The next prime is 78621573749. The reversal of 78621573701 is 10737512687.

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

It is a cyclic number.

It is not a de Polignac number, because 78621573701 - 2³⁰ = 77547831877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78621573761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210217925 + ... + 210218298.

It is an arithmetic number, because the mean of its divisors is an integer number (11351778048).

Almost surely, 2^78621573701 is an apocalyptic number.

It is an amenable number.

78621573701 is a deficient number, since it is larger than the sum of its proper divisors (12192650683).

78621573701 is a wasteful number, since it uses less digits than its factorization.

78621573701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420436251.

The product of its (nonzero) digits is 493920, while the sum is 47.

The spelling of 78621573701 in words is "seventy-eight billion, six hundred twenty-one million, five hundred seventy-three thousand, seven hundred one".