1979954855424 has 1600 divisors, whose sum is σ = 7793837162496. Its totient is φ = 487599243264.

The previous prime is 1979954855423. The next prime is 1979954855497. The reversal of 1979954855424 is 4245584599791.

1979954855424 is a `hidden beast` number, since 1 + 9 + 7 + 9 + 9 + 5 + 48 + 554 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979954855423) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 15590195649 + ... + 15590195775.

Almost surely, 2^{1979954855424} is an apocalyptic number.

1979954855424 is a gapful number since it is divisible by the number (14) 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 1979954855424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3896918581248).

1979954855424 is an abundant number, since it is smaller than the sum of its proper divisors (5813882307072).

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

1979954855424 is an frugal number, since it uses more digits than its factorization.

1979954855424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 169 counting only the distinct ones).

The product of its digits is 653184000, while the sum is 72.

The spelling of 1979954855424 in words is "one trillion, nine hundred seventy-nine billion, nine hundred fifty-four million, eight hundred fifty-five thousand, four hundred twenty-four".