97948757820 has 96 divisors (see below), whose sum is σ = 288763130880. Its totient is φ = 24738773760.

The previous prime is 97948757807. The next prime is 97948757833. The reversal of 97948757820 is 2875784979.

97948757820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (97948757807) and next prime (97948757833).

It is a super-2 number, since 2×97948757820² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6071565 + ... + 6087675.

It is an arithmetic number, because the mean of its divisors is an integer number (3007949280).

Almost surely, 2^97948757820 is an apocalyptic number.

It is an amenable number.

97948757820 is an abundant number, since it is smaller than the sum of its proper divisors (190814373060).

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

97948757820 is a wasteful number, since it uses less digits than its factorization.

97948757820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21475 (or 21473 counting only the distinct ones).

The product of its (nonzero) digits is 71124480, while the sum is 66.

The spelling of 97948757820 in words is "ninety-seven billion, nine hundred forty-eight million, seven hundred fifty-seven thousand, eight hundred twenty".