1020155152500 has 180 divisors, whose sum is σ = 3515319487680. Its totient is φ = 247310280000.

The previous prime is 1020155152451. The next prime is 1020155152501. The reversal of 1020155152500 is 52515510201.

1020155152500 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 1 + 5 + 5 + 152 + 500 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020155152501) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1813420 + ... + 2308419.

Almost surely, 2^{1020155152500} is an apocalyptic number.

1020155152500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020155152500 is an abundant number, since it is smaller than the sum of its proper divisors (2495164335180).

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

1020155152500 is a wasteful number, since it uses less digits than its factorization.

1020155152500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4121880 (or 4121860 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 27.

The spelling of 1020155152500 in words is "one trillion, twenty billion, one hundred fifty-five million, one hundred fifty-two thousand, five hundred".