1020155152455 has 80 divisors (see below), whose sum is σ = 2038204982880. Its totient is φ = 485126350848.

The previous prime is 1020155152451. The next prime is 1020155152501. The reversal of 1020155152455 is 5542515510201.

1020155152455 is a `hidden beast` number, since 1 + 0 + 2 + 0 + 1 + 55 + 152 + 455 = 666.

It is not a de Polignac number, because 1020155152455 - 2² = 1020155152451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020155152451) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 3768414 + ... + 4030043.

It is an arithmetic number, because the mean of its divisors is an integer number (25477562286).

Almost surely, 2^{1020155152455} is an apocalyptic number.

1020155152455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1020155152455 is a deficient number, since it is larger than the sum of its proper divisors (1018049830425).

1020155152455 is a wasteful number, since it uses less digits than its factorization.

1020155152455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7798510 (or 7798501 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 36.

The spelling of 1020155152455 in words is "one trillion, twenty billion, one hundred fifty-five million, one hundred fifty-two thousand, four hundred fifty-five".