97349091840 has 2400 divisors, whose sum is σ = 483621171264. Its totient is φ = 18393661440.

The previous prime is 97349091817. The next prime is 97349091857. The reversal of 97349091840 is 4819094379.

97349091840 is a `hidden beast` number, since 9 + 73 + 490 + 9 + 1 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 1452971487 + ... + 1452971553.

Almost surely, 2^97349091840 is an apocalyptic number.

97349091840 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 97349091840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241810585632).

97349091840 is an abundant number, since it is smaller than the sum of its proper divisors (386272079424).

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

97349091840 is a wasteful number, since it uses less digits than its factorization.

97349091840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 97349091840 in words is "ninety-seven billion, three hundred forty-nine million, ninety-one thousand, eight hundred forty".