97378654422 has 96 divisors (see below), whose sum is σ = 238621334400. Its totient is φ = 26342330112.

The previous prime is 97378654421. The next prime is 97378654423. The reversal of 97378654422 is 22445687379.

It is an interprime number because it is at equal distance from previous prime (97378654421) and next prime (97378654423).

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97378654421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11631454 + ... + 11639822.

It is an arithmetic number, because the mean of its divisors is an integer number (2485638900).

Almost surely, 2^97378654422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97378654422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119310667200).

97378654422 is an abundant number, since it is smaller than the sum of its proper divisors (141242679978).

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

97378654422 is a wasteful number, since it uses less digits than its factorization.

97378654422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10490 (or 10483 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 57.

The spelling of 97378654422 in words is "ninety-seven billion, three hundred seventy-eight million, six hundred fifty-four thousand, four hundred twenty-two".