1020155152501 has 2 divisors, whose sum is σ = 1020155152502. Its totient is φ = 1020155152500.

The previous prime is 1020155152451. The next prime is 1020155152517. The reversal of 1020155152501 is 1052515510201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 837360425476 + 182794727025 = 915074^2 + 427545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020155152501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1020155152501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020155152901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510077576250 + 510077576251.

It is an arithmetic number, because the mean of its divisors is an integer number (510077576251).

Almost surely, 2^{1020155152501} is an apocalyptic number.

It is an amenable number.

1020155152501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020155152501 is an equidigital number, since it uses as much as digits as its factorization.

1020155152501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2500, while the sum is 28.

The spelling of 1020155152501 in words is "one trillion, twenty billion, one hundred fifty-five million, one hundred fifty-two thousand, five hundred one".