2645897970493 has 2 divisors, whose sum is σ = 2645897970494. Its totient is φ = 2645897970492.

The previous prime is 2645897970451. The next prime is 2645897970497. The reversal of 2645897970493 is 3940797985462.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1820456673049 + 825441297444 = 1349243^2 + 908538^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645897970493 - 2¹⁷ = 2645897839421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2645897970497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322948985246 + 1322948985247.

It is an arithmetic number, because the mean of its divisors is an integer number (1322948985247).

Almost surely, 2^{2645897970493} is an apocalyptic number.

It is an amenable number.

2645897970493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645897970493 is an equidigital number, since it uses as much as digits as its factorization.

2645897970493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 823011840, while the sum is 73.

The spelling of 2645897970493 in words is "two trillion, six hundred forty-five billion, eight hundred ninety-seven million, nine hundred seventy thousand, four hundred ninety-three".