97158402000 has 720 divisors, whose sum is σ = 385295339520. Its totient is φ = 22777920000.

The previous prime is 97158401983. The next prime is 97158402059. The reversal of 97158402000 is 20485179.

97158402000 is a `hidden beast` number, since 9 + 71 + 584 + 0 + 2 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 67517281 + ... + 67518719.

It is an arithmetic number, because the mean of its divisors is an integer number (535132416).

Almost surely, 2^97158402000 is an apocalyptic number.

97158402000 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 97158402000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192647669760).

97158402000 is an abundant number, since it is smaller than the sum of its proper divisors (288136937520).

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

97158402000 is a wasteful number, since it uses less digits than its factorization.

97158402000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1521 (or 1491 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

Adding to 97158402000 its reverse (20485179), we get a palindrome (97178887179).

The spelling of 97158402000 in words is "ninety-seven billion, one hundred fifty-eight million, four hundred two thousand".