2156051520503 has 2 divisors, whose sum is σ = 2156051520504. Its totient is φ = 2156051520502.

The previous prime is 2156051520461. The next prime is 2156051520551. The reversal of 2156051520503 is 3050251506512.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2156051520503 - 2¹⁶ = 2156051454967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2156051520803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1078025760251 + 1078025760252.

It is an arithmetic number, because the mean of its divisors is an integer number (1078025760252).

Almost surely, 2^{2156051520503} is an apocalyptic number.

2156051520503 is a deficient number, since it is larger than the sum of its proper divisors (1).

2156051520503 is an equidigital number, since it uses as much as digits as its factorization.

2156051520503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45000, while the sum is 35.

The spelling of 2156051520503 in words is "two trillion, one hundred fifty-six billion, fifty-one million, five hundred twenty thousand, five hundred three".