1520142051355 has 4 divisors (see below), whose sum is σ = 1824170461632. Its totient is φ = 1216113641080.

The previous prime is 1520142051343. The next prime is 1520142051361. The reversal of 1520142051355 is 5531502410251.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1520142051355 - 2⁷ = 1520142051227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1520142051355.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152014205131 + ... + 152014205140.

It is an arithmetic number, because the mean of its divisors is an integer number (456042615408).

Almost surely, 2^{1520142051355} is an apocalyptic number.

1520142051355 is a deficient number, since it is larger than the sum of its proper divisors (304028410277).

1520142051355 is an equidigital number, since it uses as much as digits as its factorization.

1520142051355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304028410276.

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 1520142051355 in words is "one trillion, five hundred twenty billion, one hundred forty-two million, fifty-one thousand, three hundred fifty-five".