97778400192 has 252 divisors, whose sum is σ = 310305912280. Its totient is φ = 29413739520.

The previous prime is 97778400143. The next prime is 97778400211. The reversal of 97778400192 is 29100487779.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9682698 + ... + 9692790.

Almost surely, 2^97778400192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97778400192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155152956140).

97778400192 is an abundant number, since it is smaller than the sum of its proper divisors (212527512088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97778400192 is a wasteful number, since it uses less digits than its factorization.

97778400192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10272 (or 10248 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 54.

The spelling of 97778400192 in words is "ninety-seven billion, seven hundred seventy-eight million, four hundred thousand, one hundred ninety-two".