97890976378 has 8 divisors (see below), whose sum is σ = 158131577268. Its totient is φ = 45180450624.

The previous prime is 97890976333. The next prime is 97890976439. The reversal of 97890976378 is 87367909879.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 97295957929 + 595018449 = 311923^2 + 24393^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 97890976378.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1882518751 + ... + 1882518802.

Almost surely, 2^97890976378 is an apocalyptic number.

97890976378 is a deficient number, since it is larger than the sum of its proper divisors (60240600890).

97890976378 is a wasteful number, since it uses less digits than its factorization.

97890976378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765037568.

The product of its (nonzero) digits is 288054144, while the sum is 73.

The spelling of 97890976378 in words is "ninety-seven billion, eight hundred ninety million, nine hundred seventy-six thousand, three hundred seventy-eight".