1975479334920 has 384 divisors, whose sum is σ = 8366738365440. Its totient is φ = 392286412800.

The previous prime is 1975479334919. The next prime is 1975479334973. The reversal of 1975479334920 is 294339745791.

1975479334920 is a `hidden beast` number, since 1 + 9 + 7 + 54 + 7 + 93 + 3 + 492 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1216656 + ... + 2330495.

It is an arithmetic number, because the mean of its divisors is an integer number (21788381160).

Almost surely, 2^{1975479334920} is an apocalyptic number.

1975479334920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1975479334920 is an abundant number, since it is smaller than the sum of its proper divisors (6391259030520).

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

1975479334920 is a wasteful number, since it uses less digits than its factorization.

1975479334920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3547205 (or 3547198 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 63.

The spelling of 1975479334920 in words is "one trillion, nine hundred seventy-five billion, four hundred seventy-nine million, three hundred thirty-four thousand, nine hundred twenty".