1002479155020 has 288 divisors, whose sum is σ = 3682289310336. Its totient is φ = 215506944000.

The previous prime is 1002479155019. The next prime is 1002479155031. The reversal of 1002479155020 is 205519742001.

1002479155020 is a `hidden beast` number, since 10 + 0 + 2 + 4 + 7 + 91 + 550 + 2 + 0 = 666.

It is a super-2 number, since 2×1002479155020² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31707220 + ... + 31738820.

It is an arithmetic number, because the mean of its divisors is an integer number (12785726772).

Almost surely, 2^{1002479155020} is an apocalyptic number.

1002479155020 is a gapful number since it is divisible by the number (10) 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 1002479155020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1841144655168).

1002479155020 is an abundant number, since it is smaller than the sum of its proper divisors (2679810155316).

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

1002479155020 is a wasteful number, since it uses less digits than its factorization.

1002479155020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33121 (or 33116 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 36.

The spelling of 1002479155020 in words is "one trillion, two billion, four hundred seventy-nine million, one hundred fifty-five thousand, twenty".