97650667821 has 8 divisors (see below), whose sum is σ = 148801017664. Its totient is φ = 55800381600.

The previous prime is 97650667817. The next prime is 97650667823. The reversal of 97650667821 is 12876605679.

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

It is not a de Polignac number, because 97650667821 - 2² = 97650667817 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 (97650667823) 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, 2325015880 + ... + 2325015921.

It is an arithmetic number, because the mean of its divisors is an integer number (18600127208).

Almost surely, 2^97650667821 is an apocalyptic number.

It is an amenable number.

97650667821 is a deficient number, since it is larger than the sum of its proper divisors (51150349843).

97650667821 is a wasteful number, since it uses less digits than its factorization.

97650667821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4650031811.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 97650667821 in words is "ninety-seven billion, six hundred fifty million, six hundred sixty-seven thousand, eight hundred twenty-one".