997907554248 has 32 divisors (see below), whose sum is σ = 2721566057760. Its totient is φ = 302396228480.

The previous prime is 997907554229. The next prime is 997907554249. The reversal of 997907554248 is 842455709799.

It is a hoax number, since the sum of its digits (69) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (997907554249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1889976165 + ... + 1889976692.

It is an arithmetic number, because the mean of its divisors is an integer number (85048939305).

Almost surely, 2^997907554248 is an apocalyptic number.

It is an amenable number.

997907554248 is an abundant number, since it is smaller than the sum of its proper divisors (1723658503512).

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

997907554248 is a wasteful number, since it uses less digits than its factorization.

997907554248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779952877 (or 3779952873 counting only the distinct ones).

The product of its (nonzero) digits is 228614400, while the sum is 69.

The spelling of 997907554248 in words is "nine hundred ninety-seven billion, nine hundred seven million, five hundred fifty-four thousand, two hundred forty-eight".